Merge branch 'add-example-for-available-releases' into 'main'

Add example for `get_available_releases`

See merge request !111

src/mpsd_software_manager/mpsd_software.py

@@ -51,16 +51,20 @@ about_epilog = f"""
 
 Examples:
 
-    1. Query what package sets and toolchains are available for installation in
+    1. Query what releases are available for installation
+
+       $> {command_name} available
+
+    2. Query what package sets and toolchains are available for installation in
        release dev-23a
 
        $> {command_name} available dev-23a
 
-    2. Install foss2022a-serial toolchain from the dev-23a release
+    3. Install foss2022a-serial toolchain from the dev-23a release
 
        $> {command_name} install dev-23a foss2022a-serial
 
-    3. Check what package sets and toolchains are installed from release dev-23a
+    4. Check what package sets and toolchains are installed from release dev-23a
 
        $> {command_name} status dev-23a