[glossary] Glossary Template (#4785)

* [glossary] Glossary Template

* simplify

_includes/glossary/README.md

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-# Instructions for Glossary snippets
-
-Markdown snippets of glossary terms to be reused throughout the documentation should be placed in this directory.

_includes/glossary/_glossary-template.md

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+
+---
+term: Some Fancy K8s Term
+formerly:
+- Slang K8s Term
+- Misnomer
+- Formerly Known as Prince
+related:
+- Less Fancy K8s Term
+- Tangential Term
+- Commonly Used With
+---
+
+{% capture short-description %}
+Required. One or two lines that provide a minimum definition. Do not repeat the term. Prefer fragments. Model after tooltips.
+{% endcapture %}
+
+{% capture long-description %}
+Optional. Longer additional text to appear after (in conjunction with) short description. Provide where the short description is not sufficient as the intro paragraph to a topic. Write complete but concise sentences.
+
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed hendrerit dictum nisi quis posuere. Integer eleifend neque lobortis ultrices viverra. Praesent viverra placerat ex sit amet aliquet. Aliquam non ipsum ut lectus viverra pulvinar id vitae nisi. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Suspendisse aliquet congue tristique. Pellentesque at condimentum orci, iaculis pellentesque urna. Aliquam ut rhoncus lorem, a tristique est. Quisque eu est sem.
+
+Suspendisse id feugiat orci. Etiam in posuere arcu, id euismod velit. Etiam pulvinar lectus at diam porta, non lobortis dolor blandit. Donec id faucibus elit. Suspendisse auctor ligula purus, id aliquam odio vehicula a. Donec pretium ligula at nulla pulvinar, sed ultrices ligula dapibus. Cras lacinia mauris ut metus rutrum volutpat. Sed fermentum lobortis ipsum, in hendrerit lectus consectetur sed. Aliquam pulvinar tortor tellus, ac luctus est euismod congue. Maecenas enim ipsum, maximus a turpis eu, blandit imperdiet lacus.
+{% endcapture %}