add missing single quote (#1649)

Author: Fil

docs/deploying.md

@@ -161,7 +161,7 @@ jobs:
       # …
 ```
 
-This uses one cache per calendar day (in the `America/Los_Angeles` time zone). If you deploy multiple times in a day, the results of your data loaders will be reused on the second and subsequent runs. You can customize the `date` and `cache-data` steps to change the cadence of the caching. For example you could use `date +'%Y-%U'` to cache data for a week or `date +'%Y-%m-%dT%H` to cache it for only an hour.
+This uses one cache per calendar day (in the `America/Los_Angeles` time zone). If you deploy multiple times in a day, the results of your data loaders will be reused on the second and subsequent runs. You can customize the `date` and `cache-data` steps to change the cadence of the caching. For example you could use `date +'%Y-%U'` to cache data for a week or `date +'%Y-%m-%dT%H'` to cache it for only an hour.
 
 <div class="note">You’ll need to edit the paths above if you’ve configured a source root other than <code>src</code>.</div>