Apply suggestions from code review

Co-authored-by: Michael Bahr <1830132+bahrmichael@users.noreply.github.com>

Author: bahrmichael

cmd/src/abc.go

@@ -10,7 +10,7 @@ import (
 var abcCommands commander
 
 func init() {
-	usage := `'src abc' is a tool that manages agentic batch changes on a Sourcegraph instance.
+	usage := `'src abc' is a tool that manages agentic batch changes.
 
 Usage:
 

cmd/src/abc_variables.go

@@ -10,16 +10,16 @@ import (
 var abcVariablesCommands commander
 
 func init() {
-	usage := `'src abc <workflow-instance-id> variables' is a tool that manages workflow instance variables on a Sourcegraph instance.
+	usage := `'src abc <workflow-instance-id> variables' is a tool that manages workflow instance variables.
 
 Usage:
 
 	src abc <workflow-instance-id> variables command [command options]
 
 The commands are:
 
-	set	set workflow instance variables
-	delete	delete a workflow instance variable
+	set	    set workflow instance variables
+	delete	delete workflow instance variables
 
 Use "src abc <workflow-instance-id> variables [command] -h" for more information about a command.
 `