Creating Marketing division of the handbook (#8275)

* Creating Marketing division of the handbook

Marketing is comprised of Community, Digital Experience, Growth, and Handbook.

* Update marketing.md

* Update and rename handbook/company/marketing.md to handbook/marketing/README.md

* Update README.md

* Rename handbook/growth/README.md to handbook/marketing/growth.md

* Rename handbook/digital-experience/README.md to handbook/marketing/digital-experience.md

* Rename handbook/digital-experience/article-formatting-guide.md to handbook/marketing/article-formatting-guide.md

* Rename handbook/digital-experience/commonly-used-terms.md to handbook/marketing/commonly-used-terms.md

* Rename handbook/digital-experience/how-to-submit-and-publish-an-article.md to handbook/marketing/how-to-submit-and-publish-an-article.md

* Rename handbook/digital-experience/markdown-guide.md to handbook/marketing/markdown-guide.md

* Rename handbook/community/README.md to handbook/marketing/community.md

* Update markdown-guide.md

Co-authored-by: Mike McNeil <mikermcneil@users.noreply.github.com>

handbook/marketing/README.md

@@ -0,0 +1,16 @@
+# Marketing
+
+<!-- TODO: short preamble -->
+
+## Community
+[https://fleetdm.com/handbook/marketing/community](https://fleetdm.com/handbook/marketing/community)
+
+## Digital Experience
+[https://fleetdm.com/handbook/marketing/digital-experience](https://fleetdm.com/handbook/marketing/digital-experience)
+
+## Growth
+[https://fleetdm.com/handbook/marketing/growth](https://fleetdm.com/handbook/marketing/growth)
+
+
+<meta name="maintainedBy" value="timmy-k">
+<meta name="title" value="🫧 Marketing">

handbook/marketing/article-formatting-guide.md

@@ -133,4 +133,4 @@ In the following example we will modify `title`, `text`, `primary-button-text`,
 - Writing style guide (todo)
 
 <meta name="maintainedBy" value="mike-j-thomas">
-<meta name="title" value="Article formatting guide">
+<meta name="title" value="Article formatting guide">

handbook/marketing/markdown-guide.md

@@ -171,4 +171,4 @@ You can use a large quote blockquote to reduce the font size and line height of
 
 
 <meta name="maintainedBy" value="mike-j-thomas">
-<meta name="title" value="Markdown-guide">
+<meta name="title" value="Markdown guide">