ci: run docgen on prs and every branch

.github/workflows/docs.yml

@@ -1,9 +1,8 @@
 name: Generate docs
 
 on:
-  push:
-    branches:
-      - master
+  - push
+  - pull_requests
 
 jobs:
   gen:

editor.go

@@ -99,7 +99,7 @@ func editorGetLine(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
 // #interface editor
 // getChar() -> string
 // Reads a keystroke from the user. This is in a format
-// of something like Ctrl-L..
+// of something like Ctrl-L.
 func editorReadChar(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
 	buf := lr.rl.ReadChar()