Prioritize zsh content in tab completion docs (#173)

Author: ofek

docs/reference/cli/index.md

@@ -14,31 +14,31 @@ Completion is achieved by saving a script and then executing it as a part of you
 
 Afterward, you'll need to start a new shell in order for the changes to take effect.
 
-/// tab | bash
+/// tab | zsh
 Save the script somewhere:
 
 ```console
-_DDA_COMPLETE=bash_source dda > ~/.dda-complete.bash
+_DDA_COMPLETE=zsh_source dda > ~/.dda-complete.zsh
 ```
 
-Source the file in `~/.bashrc` (or `~/.bash_profile` if on macOS):
+Source the file in `~/.zshrc`:
 
 ```console
-. ~/.dda-complete.bash
+. ~/.dda-complete.zsh
 ```
 ///
 
-/// tab | zsh
+/// tab | bash
 Save the script somewhere:
 
 ```console
-_DDA_COMPLETE=zsh_source dda > ~/.dda-complete.zsh
+_DDA_COMPLETE=bash_source dda > ~/.dda-complete.bash
 ```
 
-Source the file in `~/.zshrc`:
+Source the file in `~/.bashrc` (or `~/.bash_profile` if on macOS):
 
 ```console
-. ~/.dda-complete.zsh
+. ~/.dda-complete.bash
 ```
 ///