Breeze doc tmux instruction (#20006)

* breeze setup-autocomplete zshrc reload

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command

* recommended changes done

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command

* recommended changes done

* change assignment operator to comparison

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command
fixed the static code checks - except spelling mistake of 'Sur' which is the recent macOS version name

* added a new word into spelling exception

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command

* recommended changes done

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command
fixed the static code checks - except spelling mistake of 'Sur' which is the recent macOS version name

* added a new word into spelling exception

* modified the instruction with link to pyenv README

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command
fixed the static code checks - except spelling mistake of 'Sur' which is the recent macOS version name

* modified the instruction with link to pyenv README

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command
fixed the static code checks - except spelling mistake of 'Sur' which is the recent macOS version name

* pyenv issue fix -macOS Big Sur

* pyenv issue fix -macOS Big Sur

* warning message about airflow_home and source code in same path -- initialize-local-virtualenv command
fixed the static code checks - except spelling mistake of 'Sur' which is the recent macOS version name

* modified the instruction with link to pyenv README

* change in tmux session related documentation

BREEZE.rst

@@ -393,11 +393,10 @@ you can also start integrations (separate Docker images) if specified as extra `
 chose which backend database should be used with ``--backend`` flag and python version with ``--python`` flag.
 
 You can also have breeze launch Airflow automatically ``breeze start-airflow``, this will drop you in a
-tmux session with four panes:
+tmux session with three panes:
 
    - one to monitor the scheduler,
    - one for the webserver,
-   - one monitors and compiles JavaScript files,
    - one with a shell for additional commands.
 
 Managing Prod environment (with ``--production-image`` flag):