Correct relative column and remove unwanted comment

Author: Padmashree06

Sources/DocumentationLanguageService/DocumentationLanguageService.swift

@@ -195,7 +195,13 @@ package actor DocumentationLanguageService: LanguageService, Sendable {
         return
       }
 
-      let relativeColumn = target.column - range.lowerBound.column - 3
+      // Symbol links are delimited by two backticks (``Foo/bar``),
+      // so the destination starts two columns past the start of the link.
+      let destinationStartColumn = range.lowerBound.column + 2
+      let relativeColumn = target.column - destinationStartColumn
+      guard relativeColumn >= 0 else {
+        return
+      }
       let components = destination.split(separator: "/")
       var currentLength = 0
 
@@ -264,9 +270,7 @@ package actor DocumentationLanguageService: LanguageService, Sendable {
     return line.utf8.distance(from: line.startIndex, to: stringIndex)
   }
 
-  /// The inverse of `utf8Offset(inLine:forUTF16Offset:)`. Diagnostics need this because we go the
-  /// other direction from go-to-definition: swift-markdown hands us a UTF-8 column for a symbol
-  /// link it found, and we need to turn that into the UTF-16 column LSP `Position` expects.
+  /// The inverse of `utf8Offset(inLine:forUTF16Offset:)`
   private func utf16Offset(inLine line: String, forUTF8Offset utf8Offset: Int) -> Int {
     let utf8View = line.utf8
     guard