Add page-inset classes to completions

Author: cwickham

src/resources/editor/tools/attrs.yml

@@ -174,6 +174,12 @@
       doc: Extend content on the left to a wider region
     - value: ".column-page-right"
       doc: Extend content on the right to a wider region
+    - value: ".column-page-inset"
+      doc: Extend content to a wider region (with a small margin)
+    - value: ".column-page-inset-left"
+      doc: Extend content on the left to a wider region (with a small margin)
+    - value: ".column-page-inset-right"
+      doc: Extend content on the right to a wider region (with a small margin)
     - value: ".column-screen-inset"
       doc: Extend content to full width (with a small margin)
     - value: ".column-screen-inset-shaded"