Update documentation to reference the feature branch

docs/development/getting-started.md

@@ -27,13 +27,13 @@ base_requirements.txt  contrib          docs         mkdocs.yml  NOTICE     requ
 CHANGELOG.md           CONTRIBUTING.md  LICENSE.txt  netbox      README.md  scripts
 ```
 
-The NetBox project utilizes three long-term branches:
+The NetBox project utilizes three persistent git branches to track work:
 
 * `master` - Serves as a snapshot of the current stable release
 * `develop` - All development on the upcoming stable release occurs here
-* `develop-x.y` - Tracks work on an upcoming major release
+* `feature` - Tracks work on an upcoming major release
 
-Typically, you'll base pull requests off of the `develop` branch, or off of `develop-x.y` if you're working on a new major release. **Never** base pull requests off of the master branch, which receives merged only from the `develop` branch.
+Typically, you'll base pull requests off of the `develop` branch, or off of `feature` if you're working on a new major release. **Never** merge pull requests into the `master` branch, which receives merged only from the `develop` branch.
 
 ### Enable Pre-Commit Hooks
 

docs/development/release-checklist.md

@@ -52,10 +52,7 @@ Close the release milestone on GitHub after ensuring there are no remaining open
 
 ### Merge the Release Branch
 
-Submit a pull request to merge the release branch `develop-x.y` into the `develop` branch in preparation for its releases.
-
-!!! warning
-    No further releases for the current major version can be published once this pull request is merged.
+Submit a pull request to merge the `feature` branch into the `develop` branch in preparation for its release.
 
 ---
 

docs/installation/3-netbox.md

@@ -83,7 +83,7 @@ Checking connectivity... done.
 ```
 
 !!! note
-    Installation via git also allows you to easily try out development versions of NetBox. The `develop` branch contains all work underway for the next minor release, and the `develop-x.y` branch (if present) tracks progress on the next major release. 
+    Installation via git also allows you to easily try out development versions of NetBox. The `develop` branch contains all work underway for the next minor release, and the `feature` branch tracks progress on the next major release. 
 
 ## Create the NetBox System User