fix for build error (#632)

Author: kanchana-mongodb

source/command/mongocli-completion-bash.txt

@@ -24,10 +24,12 @@ To load completions in your current shell session:
 $ source <(mongocli completion bash)
 
 To load completions for every new session, execute once:
+
 Linux:
-  $ mongocli completion bash > /etc/bash_completion.d/mongocli
-MacOS:
-  $ mongocli completion bash > /usr/local/etc/bash_completion.d/mongocli
+$ mongocli completion bash > /etc/bash_completion.d/mongocli
+
+MacOS: 
+$ mongocli completion bash > /usr/local/etc/bash_completion.d/mongocli
 
 You will need to start a new shell for this setup to take effect.