docs: rewrite wording to make it pleasant to read

Co-authored-by: Luke Russell <[email protected]>

example-workflows/Technique_1_Slack_Workflow_Builder/README.md

@@ -1,7 +1,6 @@
 # Technique 1: Slack Workflow Builder
 
-> :memo: This technique requires [a Slack paid plan][plans] to use Workflow
-> Builder.
+> :memo: This technique uses Workflow Builder, which requires [a Slack paid plan][plans].
 
 This technique sends data to Slack using a webhook to start a workflow created
 using Slack [Workflow Builder][wfb].
@@ -46,7 +45,7 @@ following:
 
 1. Open a form to select a channel.
 2. Send a message to the selected channel.
-3. React with an excited emoji.
+3. React with a `:tada:` emoji.
 
 **Related files**:
 

example-workflows/Technique_2_Slack_API_Method/README.md

@@ -1,11 +1,11 @@
 # Technique 2: Slack API method
 
-A bot token or user token or [token of some other kind][tokens] must be used to
+A [token][tokens], such as a bot or user token, must be used to
 call one of [the Slack API methods][methods] with this technique.
 
 ## Setup
 
-For details on how to setup this technique in GitHub Actions, read the
+For details on how to set up this technique in GitHub Actions, read the
 [`README.md`][setup].
 
 ## Example workflows