Stray character cleanup

Signed-off-by: Ben Ford <binford2k@overlookinfratech.com>

Author: binford2k

docs/_ecosystem_8x/devkit/impact_analysis.md

@@ -37,7 +37,7 @@ Update your notify to `notify { 'world': }` and generate a second catalog saved
 Now we can see the difference in the two catalogs.
 
 ```console
-$ $ puppet module install puppet-catalog_diff
+$ puppet module install puppet-catalog_diff
 Notice: Preparing to install into /Users/ben.ford/.puppetlabs/etc/code/environments/production/modules ...
 Notice: Downloading from https://forgeapi.puppet.com ...
 Notice: Installing -- do not interrupt ...