fix: instruct people to restart their terminals

modifying shell rc files don't have immediate effect and it's confusing
if you don't know this.

docs/abra/cheat-sheet.md

@@ -15,6 +15,8 @@ Definitely set up autocomplete or you'll be sad :sob: `abra` supports `bash`,
 
 ```
 $ abra autocomplete bash
+# Restart your terminal or load autocompletion in place
+$ source /etc/bash_completion.d/abra
 ```
 
 

docs/operators/tutorial.md

@@ -82,7 +82,8 @@ abra -h
 ```
 
 You may need to add the `~/.local/bin/` directory to your `$PATH` variable, in
-order to run the executable.
+order to run the executable. Also, run this line into your terminal so
+you have immediate access to `abra` on the current terminal.
 
 ```bash
 export PATH=$PATH:$HOME/.local/bin