Fix various documentation, user-facing, and source comment typos (#16367)

* Fix various doc, user-facing, and source comment typos

Found via `codespell -q 3 -S ./options/locale,./vendor -L ba,pullrequest,pullrequests,readby`

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -128,8 +128,8 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
   - Options other than `never` and `always` can be combined as a comma separated list.
 - `DEFAULT_TRUST_MODEL`: **collaborator**: \[collaborator, committer, collaboratorcommitter\]: The default trust model used for verifying commits.
    - `collaborator`: Trust signatures signed by keys of collaborators.
-   - `committer`: Trust signatures that match committers (This matches GitHub and will force Gitea signed commits to have Gitea as the commmitter).
-   - `collaboratorcommitter`: Trust signatures signed by keys of collaborators which match the commiter.
+   - `committer`: Trust signatures that match committers (This matches GitHub and will force Gitea signed commits to have Gitea as the committer).
+   - `collaboratorcommitter`: Trust signatures signed by keys of collaborators which match the committer.
 - `WIKI`: **never**: \[never, pubkey, twofa, always, parentsigned\]: Sign commits to wiki.
 - `CRUD_ACTIONS`: **pubkey, twofa, parentsigned**: \[never, pubkey, twofa, parentsigned, always\]: Sign CRUD actions.
   - Options as above, with the addition of:
@@ -345,9 +345,9 @@ The following configuration set `Content-Type: application/vnd.android.package-a
 - `PATH`: **data/gitea.db**: For SQLite3 only, the database file path.
 - `LOG_SQL`: **true**: Log the executed SQL.
 - `DB_RETRIES`: **10**: How many ORM init / DB connect attempts allowed.
-- `DB_RETRY_BACKOFF`: **3s**: time.Duration to wait before trying another ORM init / DB connect attempt, if failure occured.
+- `DB_RETRY_BACKOFF`: **3s**: time.Duration to wait before trying another ORM init / DB connect attempt, if failure occurred.
 - `MAX_OPEN_CONNS` **0**: Database maximum open connections - default is 0, meaning there is no limit.
-- `MAX_IDLE_CONNS` **2**: Max idle database connections on connnection pool, default is 2 - this will be capped to `MAX_OPEN_CONNS`.
+- `MAX_IDLE_CONNS` **2**: Max idle database connections on connection pool, default is 2 - this will be capped to `MAX_OPEN_CONNS`.
 - `CONN_MAX_LIFETIME` **0 or 3s**: Sets the maximum amount of time a DB connection may be reused - default is 0, meaning there is no limit (except on MySQL where it is 3s - see #6804 & #7071).
 
 Please see #8540 & #8273 for further discussion of the appropriate values for `MAX_OPEN_CONNS`, `MAX_IDLE_CONNS` & `CONN_MAX_LIFETIME` and their
@@ -385,7 +385,7 @@ relation to port exhaustion.
 - `LENGTH`: **20**: Maximal queue size before channel queues block
 - `BATCH_LENGTH`: **20**: Batch data before passing to the handler
 - `CONN_STR`: **redis://127.0.0.1:6379/0**: Connection string for the redis queue type. Options can be set using query params. Similarly LevelDB options can also be set using: **leveldb://relative/path?option=value** or **leveldb:///absolute/path?option=value**, and will override `DATADIR`
-- `QUEUE_NAME`: **_queue**: The suffix for default redis and disk queue name. Individual queues will default to **`name`**`QUEUE_NAME` but can be overriden in the specific `queue.name` section.
+- `QUEUE_NAME`: **_queue**: The suffix for default redis and disk queue name. Individual queues will default to **`name`**`QUEUE_NAME` but can be overridden in the specific `queue.name` section.
 - `SET_NAME`: **_unique**: The suffix that will be added to the default redis and disk queue `set` name for unique queues. Individual queues will default to
  **`name`**`QUEUE_NAME`_`SET_NAME`_ but can be overridden in the specific `queue.name` section.
 - `WRAP_IF_NECESSARY`: **true**: Will wrap queues with a timeoutable queue if the selected queue is not ready to be created - (Only relevant for the level queue.)
@@ -516,7 +516,7 @@ relation to port exhaustion.
 - `AUTO_WATCH_NEW_REPOS`: **true**: Enable this to let all organisation users watch new repos when they are created
 - `AUTO_WATCH_ON_CHANGES`: **false**: Enable this to make users watch a repository after their first commit to it
 - `DEFAULT_USER_VISIBILITY`: **public**: Set default visibility mode for users, either "public", "limited" or "private".
-- `ALLOWED_USER_VISIBILITY_MODES`: **public,limited,private**: Set whitch visibibilty modes a user can have
+- `ALLOWED_USER_VISIBILITY_MODES`: **public,limited,private**: Set which visibility modes a user can have
 - `DEFAULT_ORG_VISIBILITY`: **public**: Set default visibility mode for organisations, either "public", "limited" or "private".
 - `DEFAULT_ORG_MEMBER_VISIBLE`: **false** True will make the membership of the users visible when added to the organisation.
 - `ALLOW_ONLY_INTERNAL_REGISTRATION`: **false** Set to true to force registration only via gitea.
@@ -895,7 +895,7 @@ IS_INPUT_FILE = false
 - ENABLED: **false** Enable markup support; set to **true** to enable this renderer.
 - NEED\_POSTPROCESS: **true** set to **true** to replace links / sha1 and etc.
 - FILE\_EXTENSIONS: **\<empty\>** List of file extensions that should be rendered by an external
-   command. Multiple extentions needs a comma as splitter.
+   command. Multiple extensions needs a comma as splitter.
 - RENDER\_COMMAND: External command to render all matching extensions.
 - IS\_INPUT\_FILE: **false** Input is not a standard input but a file param followed `RENDER_COMMAND`.
 
@@ -927,7 +927,7 @@ If the rule is defined above the renderer ini section or the name does not match
 
 ## Time (`time`)
 
-- `FORMAT`: Time format to diplay on UI. i.e. RFC1123 or 2006-01-02 15:04:05
+- `FORMAT`: Time format to display on UI. i.e. RFC1123 or 2006-01-02 15:04:05
 - `DEFAULT_UI_LOCATION`: Default location of time on the UI, so that we can display correct user's time on UI. i.e. Shanghai/Asia
 
 ## Task (`task`)