DOP-0000 adds the pull request template (#12285)

* DOP-0000 adds the pull request template

* DOP-0000 from what I can understand this will make the template visible only for platform changes

* Adds the DOP template and a blank template for the writers to build out

* Fix typo in the README and adds the writing teams template

Author: caesarbell

.github/PULL_REQUEST_TEMPLATE/content.md

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+## DESCRIPTION
+
+
+## STAGING
+
+
+## JIRA
+
+
+## SELF-REVIEW CHECKLIST
+
+- [ ] Does each file have 3-5 taxonomy facet tags?
+  See the [taxonomy tagging instructions](https://wiki.corp.mongodb.com/display/DE/Taxonomy+tagging+instructions) and this [example PR](https://github.com/10gen/cloud-docs/pull/5042/files) 
+- [ ] Is this free of any warnings or errors in the RST?
+- [ ] Is this free of spelling errors?
+- [ ] Is this free of grammatical errors?
+- [ ] Is this free of staging / rendering issues?
+- [ ] Are all the links working?
+
+## EXTERNAL REVIEW REQUIREMENTS
+
+[What's expected of an external reviewer?](https://wiki.corp.mongodb.com/display/DE/Reviewing+Guidelines+for+the+MongoDB+Server+Documentation)

.github/PULL_REQUEST_TEMPLATE/platform.md

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+### Stories/Links:
+
+DOP-NNNN
+
+### Notes:
+
+### README updates
+
+- - [ ] This PR introduces changes that should be reflected in the README, and I have made those updates.
+- - [ ] This PR does not introduce changes that should be reflected in the README

README.md

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+# Docs Monorepo
+
+### Selecting PR Template 
+
+When creating a pull request, you can automatically populate the description with a template by adding a query parameter to the URL. We provide two templates:
+
+- Platform changes: Use `?template=platform.md`
+- Content changes: Use `?template=content.md`
+
+For example:
+
+```curl
+https://github.com/example/exampleChanges/compare/test?expand=1&template=template.md
+```