Fix release calculation and notes (#1542)

Author: therve

.github/workflows/prepare_release.yml

@@ -28,7 +28,7 @@ jobs:
         run: |
           if [ "${VERSION}" = "" ] ; then
             LATEST_TAG=$(git describe --tags --abbrev=0)
-            NEXT_TAG=$(echo ${LATEST_TAG} | awk '{split($0, a, "."); print a[1] "." a[2] + 1 "." a[3]}')
+            NEXT_TAG=$(echo ${LATEST_TAG} | awk '{split($0, a, "."); print a[1] "." a[2] + 1 ".0"}')
             echo "version=$NEXT_TAG" >> $GITHUB_OUTPUT
           else
             echo "version=$VERSION" >> $GITHUB_OUTPUT

RELEASING.md

@@ -22,7 +22,7 @@ The release process is controlled and run by GitHub Actions.
 ### Update Changelog
 
 1. Open [prepare release](https://github.com/DataDog/datadog-api-client-python/actions/workflows/prepare_release.yml) and click on `Run workflow` dropdown.
-1. Enter new version identifier in the `New version number` input box (e.g. `1.10.0`).
+1. If needed, enter new version identifier in the `New version number` input box (e.g. `1.10.0`). The default updates the previous minor.
 1. Trigger the action by clicking on `Run workflow` button.
 
 ### Review