fix small typo in auto-completion.md

content/docs/auto-completion.md

@@ -37,7 +37,7 @@ Different from function and word completion which can be triggered automatically
 
 ### Automatic completion
 
-The completion list can be triggered automatically as you type, via settings in [**Settings > Preferences > Auto-Completion**](../preferences/#auto-completion): Auto-Completion is controlled by a checkbox. Additionally there is a setting **From X th character**, accepting a the minimum length of a prefix needed before the completion list is shown (some people like 2, some 3, some 4...); and, there is a setting to specify which candidates should be used: words, functions, or both.
+The completion list can be triggered automatically as you type, via settings in [**Settings > Preferences > Auto-Completion**](../preferences/#auto-completion): Auto-Completion is controlled by a checkbox. Additionally there is a setting **From X th character**, accepting the minimum length of a prefix needed before the completion list is shown (some people like 2, some 3, some 4...); and, there is a setting to specify which candidates should be used: words, functions, or both.
 
 With auto-completion active, after typing a prefix of at least the minimum length, a list is presented with all the available words from the selected list(s) that match what's been typed. (If none match, no list is shown.) The list may be a single entry long, or it may contain multiple items which require navigation, but either way you can select the match and, it is hoped, save yourself some typing.  You can use arrow keys (or the mouse) to navigate through the entries in the popup; hitting the completion key or double-clicking on the choice will select that choice and enter it as if you had just typed the whole word; hitting the `Esc` key will exit the auto-completion popup _without_ choosing one of the suggestions.