Fix typos (#411)

Found via `codespell -L caf,etcp,alle,aks`

topics/ansible/README.md

@@ -352,7 +352,7 @@ A full list can be found at  [PlayBook Variables](https://docs.ansible.com/ansib
   * Host facts override play variables
   * A role might include the following: vars, meta, and handlers
   * Dynamic inventory is generated by extracting information from external sources
-  * It’s a best practice to use indention of 2 spaces instead of 4
+  * It’s a best practice to use indentation of 2 spaces instead of 4
   * ‘notify’ used to trigger handlers
   * This “hosts: all:!controllers” means ‘run only on controllers group hosts</summary><br><b>
 </b></details>