C#: Fix quality issues

csharp/extractor/Semmle.Extraction.CSharp/Comments/CommentBinding.cs

@@ -9,5 +9,5 @@ namespace Semmle.Extraction.CSharp
         Best,       // The most likely element associated with a comment
         Before,     // The element before the comment
         After       // The element after the comment
-    };
+    }
 }

csharp/extractor/Semmle.Extraction.CSharp/Comments/CommentLineType.cs

@@ -9,5 +9,5 @@ namespace Semmle.Extraction.CSharp
         XmlDoc,                 // Comment starting /// ...
         Multiline,              // Comment starting /* ..., even if the comment only spans one line.
         MultilineContinuation   // The second and subsequent lines of comment in a multiline comment.
-    };
+    }
 }