inline_completion: Add missing punctuation (#24477)

This PR adds some missing punctuation.

Release Notes:

- N/A

crates/inline_completion/src/inline_completion.rs

@@ -22,7 +22,7 @@ pub struct InlineCompletion {
 pub enum DataCollectionState {
     /// The provider doesn't support data collection.
     Unsupported,
-    /// Data collection is enabled
+    /// Data collection is enabled.
     Enabled,
     /// Data collection is disabled or unanswered.
     Disabled,