fix typo in action name, make description more precise

Author: gr2m

action.yml

@@ -1,5 +1,5 @@
-name: 'GitHub Isue Parser'
-description: 'Turn GitHub Issues into a JSON schema'
+name: 'GitHub Issue Parser'
+description: 'Turn a GitHub Issues body into a JSON object'
 inputs:
   template-path:
     description: 'Path to the issue form template file'
@@ -8,4 +8,4 @@ outputs:
     description: 'JSON string'
 runs:
   using: 'node12'
-  main: 'dist/index.js'
+  main: 'dist/index.js'