docs: add missing combined releases section

Author: kamikazePT

docs/commands/bump.md

@@ -121,6 +121,12 @@ Commitizen supports the [PEP 440][pep440] version format, which includes several
 1.0.0.post1.dev1   # Post-release 1 with development release 1
 ```
 
+#### Combined Post-release, Pre-release and Development
+```text
+1.0.0a1.post0.dev0    # Alpha release 1 Post-release 0 with development release 0
+1.0.0rc1.post1.dev1   # Release candidate 1 Post-release 1 with development release 1
+```
+
 ## Command line options
 
 ![cz bump --help](../images/cli_help/cz_bump___help.svg)