Add Github wehbook management

Change-Id: I4b7a23a77838f345d65adf51877fab5978bd6055
diff --git a/server/app/proposal.go b/server/app/proposal.go
index 4b2acc4..165f336 100644
--- a/server/app/proposal.go
+++ b/server/app/proposal.go
@@ -15,7 +15,7 @@
 	// Process the webhook payload
 	taskID, err := git.ProcessMergeWebhook(body, signature, a.config.GitHub.WebhookSecret)
 	if err != nil {
-		return fmt.Errorf("Failed to process webhook: %w", err)
+		return fmt.Errorf("failed to process webhook: %w", err)
 	}
 
 	// Log the successful approval