Remove potentially offensive word from code comment (#120354)

Author: jeffhandley

src/mono/System.Private.CoreLib/src/System/Reflection/Emit/SignatureHelper.cs

@@ -359,7 +359,7 @@ public override bool Equals(object? obj)
 
         public override int GetHashCode()
         {
-            // Lame, but easy, and will work, and chances are
+            // This is easy and will work; chances are
             // you will only need a few of these.
             return 0;
         }