[main] Update community files #284

	# Copyright 2020 The Knative Authors.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.

	name: Source of Truth

	on:
	pull_request:
	branches: [ '*' ]

	jobs:
	check:
	runs-on: ubuntu-latest
	steps:
	- name: check
	if: ${{ github.repository != 'knative-extensions/.github' }}
	run: \|
	echo "::error::${{ github.repository }} is not the source of truth. Please send a Pull Request to 'knative-extensions/.github' instead."
	exit 1

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