remove id suffix from index column name (#505)

needs to be done via helpers that inject the data as not every column is id

src/Dhgms.Nucleotide.Generators/Features/EntityFramework/EntityFrameworkEntityTypeConfigurationGeneratorProcessor.cs

@@ -590,7 +590,7 @@ private static IEnumerable<string> GetIndexColumnNames(string[] names)
                     throw new ArgumentException($"Index at position {index} has a column name that is null or whitespace.", nameof(names));
                 }
 
-                yield return $"t.{name.Trim()}Id";
+                yield return $"t.{name.Trim()}";
             }
         }