fix: q-editor code button isssue quasarframework#2827

Author: rstoenescu

src/components/editor/editor-caret.js

@@ -175,10 +175,14 @@ export class Caret {
 
   apply (cmd, param, done = () => {}) {
     if (cmd === 'formatBlock') {
-      if (['BLOCKQUOTE', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6', 'PRE'].includes(param) && this.is(cmd, param)) {
+      if (['BLOCKQUOTE', 'H1', 'H2', 'H3', 'H4', 'H5', 'H6'].includes(param) && this.is(cmd, param)) {
         cmd = 'outdent'
         param = null
       }
+
+      if (param === 'PRE' && this.is(cmd, 'PRE')) {
+        param = 'P'
+      }
     }
     else if (cmd === 'print') {
       done()