chore: reduce logging of error message (#220)

Author: kotharironak

span-normalizer/span-normalizer/src/main/java/org/hypertrace/core/spannormalizer/fieldgenerators/HttpFieldsGenerator.java

@@ -556,7 +556,7 @@ private void populateUrlParts(Request.Builder requestBuilder) {
       }
     } catch (MalformedURLException e) {
       // Should not happen Since the url in the request should be valid.
-      LOGGER.error("Error populating url parts", e);
+      LOGGER.warn("Error populating url parts - An invalid URL: {}, {}", urlStr, e.getMessage());
     }
   }