README.update: add correct command to regenerate keys (if check failed).

README.update

@@ -10,7 +10,7 @@
 # ---
 
 
-export GITEA_RELEASE_NUMBER="1.26.2"
+export GITEA_RELEASE_NUMBER="1.27.2"
 echo $GITEA_RELEASE_NUMBER
 
 
@@ -34,6 +34,14 @@ mkdir -p /home/git/temp_backups
   --work-path /var/lib/gitea/ \
   --custom-path /var/lib/gitea/custom/
 
+# if check numer 4 failed:
+#
+#     [4] Check if OpenSSH authorized_keys file is up-to-date
+#      - [E] authorized_keys file "/home/git/.ssh/authorized_keys" is out of date.
+#
+gitea admin --config /etc/gitea/app.ini regenerate keys
+
+
 
 # make a backup
 #