Validate that tag descriptions are more than a copy of the tag name.

src/NodaValidationHelper.php

@@ -39,6 +39,11 @@ final class NodaValidationHelper {
             throw new MDgenericInvalidInputsException("Tag description is too short");
         }
 
+        // Ensure the description is not just a copy-pasted version of the tag name.
+        if (empty(trim(str_replace($description, $name, ''), "#,.;:\t " . PHP_EOL))) {
+            throw new MDgenericInvalidInputsException("The tag description cannot be simply a fancy copy of the tag's name. Please define it.");
+        }
+
         // Validate tag description based on character composition.
 
         // Ensure more than 3 distinct characters are used.