adding how-to for making glossary tooltips (#7014)

* adding how-to for making glossary tooltips to include docs for contribution

* cross reference from style guide

* include example render

docs/home/contribute/includes.md

@@ -60,9 +60,24 @@ changed by setting the <code>for_k8s_version</code> variable.
 {{ "{% include feature-state-deprecated.md " }}%}
 ````
 
+## Glossary
+
+You can reference glossary terms with an inclusion that will automatically update and replace content with the relevant links from [our glossary](docs/reference/glossary/). When the term is moused-over by someone
+using the online documentation, the glossary entry will display a tooltip.
+
+The raw data for glossary terms is stored at [https://github.com/kubernetes/website/tree/master/_data/glossary](https://github.com/kubernetes/website/tree/master/_data/glossary), with a YAML file for each glossary term.
+
+### Glossary Demo
+
+For example, the following include within the markdown will render to {% glossary_tooltip text="cluster" term_id="cluster" %} with a tooltip:
+
+````liquid
+{{ "{% glossary_tooltip text=" }}"cluster" term_id="cluster" %}
+````
+
 ## Tabs
 
-In a markdown page (.md file) on this site, you can add a tab set to display multiple flavors of a given solution. 
+In a markdown page (`.md` file) on this site, you can add a tab set to display multiple flavors of a given solution.
 
 ### Tabs demo
 
@@ -160,7 +175,7 @@ The `capture [variable_name]` tags store text or markdown content and assign the
 {{ "{% assign tab_names = 'Default,Calico,Flannel,Romana,Weave Net' | split: ',' | compact " }}%}
 ````
 
-The `assign tab_names` tag takes a list of labels to use for the tabs. Label text can include spaces. The given comma delimited string is split into an array and assigned to the `tab_names` variable. 
+The `assign tab_names` tag takes a list of labels to use for the tabs. Label text can include spaces. The given comma delimited string is split into an array and assigned to the `tab_names` variable.
 
 #### Assigning tab contents
 

docs/home/contribute/style-guide.md

@@ -15,7 +15,7 @@ docs, follow the instructions on
 
 {% capture body %}
 
-**Note:** Kubernetes documentation uses [GitHub Flavored Markdown](https://github.github.com/gfm/).
+**Note:** Kubernetes documentation uses [GitHub Flavored Markdown](https://github.github.com/gfm/) along with a few [local jekyll includes](/docs/home/contribute/includes/) to support glossary entries, tabs, and representing feature state.
 {: .note}
 
 ## Language