[chore] add v prefix to chlog-update calls in release pr automation (o…

…pen-telemetry#18445)

Signed-off-by: Alex Boten <[email protected]>

.github/workflows/scripts/release-prepare-release.sh

@@ -1,6 +1,6 @@
 #!/bin/bash -ex
 
-make chlog-update VERSION="${CANDIDATE_BETA}"
+make chlog-update VERSION="v${CANDIDATE_BETA}"
 git config user.name opentelemetrybot
 git config user.email [email protected]
 
@@ -28,7 +28,7 @@ git push origin "${BRANCH}"
 
 gh pr create --title "[chore] Prepare release ${CANDIDATE_BETA}" --body "
 The following commands were run to prepare this release:
-- make chlog-update VERSION=${CANDIDATE_BETA}
+- make chlog-update VERSION=v${CANDIDATE_BETA}
 - sed -i.bak s/${CURRENT_BETA}/${CANDIDATE_BETA}/g versions.yaml
 - make multimod-prerelease
 - make multimod-sync