Chore - Fix 2 other places where the wrong default branch is used

Author: johnhurt

.github/workflows/audit.yml

@@ -3,7 +3,7 @@ name: Security Audit
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - "**/Cargo.toml"
   schedule:

.github/workflows/docs.yml

@@ -1,7 +1,7 @@
 on:
   push:
     branches:
-      - master
+      - main
 
 name: Docs