update documentation for stability framework

Change-Id: Id3fea91aac9c6faf2c920b1a0bec721e930a99ae

test/instrumentation/documentation/doc.go

@@ -0,0 +1,21 @@
+/*
+Copyright 2022 The Kubernetes 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.
+*/
+
+/*
+This stand-alone package is utilized for dynamically generating/maintaining
+documentation on all parseable metrics in the Kubernetes code base.
+*/
+package main