Fix comments in has_update

tools/has_update

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
-# version: 0.1
-# File: /srv/toot/has_update
+# version: 0.2
+# File: /srv/toot/tools/has_update
 
 # Copyright (C) 2023 Cyrille Louarn <echolib+tools@a-lec.org>
 
@@ -47,10 +47,13 @@ repo  = f"https://api.github.com/repos/{owner}/{name}/releases/latest"
 
 # VLH (Very Little Help)
 helps = """Usage: has_update [argument]
+! With no argument, a message is ouput ONLY if an update is available
+   
    -h  : This help !
    -v  : Show both versions (online, and installed)
 """
 
+
 #=====================================================#
 # Check available version using Git API with requests #
 #-----------------------------------------------------#
@@ -78,11 +81,11 @@ def get_installed_release():
        check=True              # exception if failure
       )
 
-      # Output captured successfully
+      # Output if success
       return result.stdout.strip()
 
+   # Command failed
    except subprocess.CalledProcessError as e:
-      # Handle the case where the command fails
       print("Failed to get installed release:", e.stderr.strip())
       sys.exit(2)
 
@@ -91,11 +94,12 @@ def get_installed_release():
 # Main #
 #------#
 
-# With -h argument, show both versions
+# With -h argument, show help only
 if '-h' in sys.argv:
    print(helps)
    sys.exit(0)
 
+
 # Get versions (online and local)
 available_version = get_available_release()
 installed_version = get_installed_release() 
@@ -106,7 +110,7 @@ if '-v' in sys.argv:
    print(f"{owner}:")
    print(f"- Available: {available_version}\n- Installed: {installed_version}")
 
-# A new version is available
+# Show message if a new version is available
 elif available_version != installed_version:
       print(f"{owner}: {installed_version} -> {available_version}")