Fix off-by-one error.

Author: Hosch250

Rubberduck.Parsing/ParserRuleContextExtensions.cs

@@ -20,7 +20,7 @@ public static Selection GetSelection(this ParserRuleContext context)
             var startLine = context.Start.Line == 0 ? 1 : context.Start.Line;
             var startCol = context.Start.Column + 1;
             var endLine = context.Stop.Line == 0 ? 1 : context.Stop.Line;
-            var endCol = context.Stop.Column + context.Stop.Text.Length;
+            var endCol = context.Stop.Column + context.Stop.Text.Length + 1;
 
             return new Selection(
                 startLine,