assert: address PR feedback

Co-authored-by: Aviv Keller <me@aviv.sh>

Author: AbdelrahmanHafez

lib/internal/assert/assertion_error.js

@@ -100,6 +100,7 @@ function inspectValue(val) {
     return StringPrototypeSlice(result, 0, kMaxInspectOutputLength) +
       kTruncatedByteMarker;
   }
+
   return result;
 }