Added input parameter validation with few small changes #254

	name: Create Documentation Issue
	on:
	pull_request:
	types:
	- labeled
	env:
	PR_NUMBER: ${{ github.event.number }}

	jobs:
	create-issue:
	if: ${{ github.event.label.name == 'needs-documentation' }}
	runs-on: ubuntu-latest
	name: Create Documentation Issue
	steps:
	- name: GitHub App token
	id: github_app_token
	uses: tibdex/github-app-token@v1.5.0
	with:
	app_id: ${{ secrets.APP_ID }}
	private_key: ${{ secrets.APP_PRIVATE_KEY }}
	installation_id: 22958780

	- name: Checkout code
	uses: actions/checkout@v2

	- name: Edit the issue template
	run: \|
	echo "https://github.com/opensearch-project/geospatial/pull/${{ env.PR_NUMBER }}." >> ./.github/ISSUE_TEMPLATE/documentation-issue.md

	- name: Create Issue From File
	id: create-issue
	uses: peter-evans/create-issue-from-file@v4
	with:
	title: Add documentation related to new feature
	content-filepath: ./.github/ISSUE_TEMPLATE/documentation-issue.md
	labels: documentation
	repository: opensearch-project/documentation-website
	token: ${{ steps.github_app_token.outputs.token }}

	- name: Print Issue
	run: echo Created related documentation issue ${{ steps.create-issue.outputs.issue-number }}

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