Merge pull request #3173 from FlowFuse/docs-handbook-slack-channel

docs(handbook): Add information about `gh-handbook` Slak channel

Author: joepavitt

src/handbook/company/communication.md

@@ -125,6 +125,7 @@ below so you get to decide if you want more channels or not.
 - `#feature-demos` is where product updates are shared. All team members should keep a pulse of product changes, independent of their roles.
 - `#ops-metrics` will output sales and engagement metrics.
 - `#virtual-coffee` to schedule coffee calls with other team members.
+- `#gh-handbook` to follow changes in the handbook.
 
 #### Channel name structure
 

src/handbook/index.md

@@ -16,6 +16,8 @@ shared in this handbook.
 
 The handbook is here for the whole company to help maintain. Pull-requests are welcome and [strongly encouraged](#contributing).
 
+To follow the latest changes in the Handbook, join the `#gh-handbook` channel on Slack.
+
 ## How FlowFuse is run
 
 To run our company we provide a comprehensive guide outlining policies, procedures, and expectations, fostering consistency, clarity, and effective communication within the organization.