(doc) Document rule CPMR0070 with proper information

This adds documentation to the CPMR0070 rule to inform users of what the
issue is, how to remediate the issue and the reasoning behind it being
flagged.

Author: AdmiringWorm

src/content/docs/en-us/community-repository/moderation/package-validator/rules/cpmr0070.mdx

@@ -12,16 +12,15 @@ import PackageValidatorRuleNote from '@components/docs/PackageValidatorRuleNote.
 
 <PackageValidatorRuleNote />
 
-<Callout type="info">
-    This page is a stub that has not yet been filled out. If you have questions about this issue, please ask in the review or reach out on [Community Chat](https://ch0.co/community)
-</Callout>
-
 ## Issue
 
-In the nuspec,
+In the nuspec, the `<id>` field has been specified with an underscore (`_`) as part of the package identifier when separating words.
 
 ## Recommended Solution
 
-Please update _ so that _
+Please update the `<id>` field in the `.nuspec` file to ensure that the package identifier does not contain an underscore, and follows our [package naming Guidelines](https://docs.chocolatey.org/en-us/create/create-packages/#naming-your-package)
 
 ## Reasoning
+
+Packages on Chocolatey Community Repository should follow package guidelines and established conventions.
+One of the established conventions is to separate different words using a dash (`-`) instead of an underscore (`_`).