docs(action): fix input and output descriptions in action.yml

Author: kranthipoturaju

action.yml

@@ -36,7 +36,8 @@ inputs:
 outputs:
   results:
     description: >
-      JSON array of lint results for each analyzed commit. Each entry contains:
+      JSON-encoded string representing an array of lint results for each analyzed
+       commit; parse it with fromJson in workflows. Each entry contains:
       hash (commit SHA), message (commit message), valid (boolean),
       errors (array of strings), warnings (array of strings).
 runs: