Add newlines and remove trailing whitespace

* modified: git/hooks/pre-commit
* modified: tmux/tmux.conf

git/hooks/pre-commit

@@ -62,4 +62,4 @@ else
     echo "To add missing newline at EOF, you can use:"
     echo "  echo >> <filename>"
     exit 1
-fi
+fi

tmux/tmux.conf

@@ -170,4 +170,4 @@ bind P display-popup -E -w 70% -h 50% '/usr/local/bin/exek'
 bind -n M-Space display-popup -E -w 80% -h 60% '/usr/local/bin/exek'
 
 # Keep the original tmux-fzf-menu on prefix + M for tmux operations
-bind M display-popup -E -w 80% -h 80% "bash ~/.config/tmux/tmux-fzf-menu.sh --menu"
+bind M display-popup -E -w 80% -h 80% "bash ~/.config/tmux/tmux-fzf-menu.sh --menu"