docs: keyboard shortcuts updated

packages/noco-docs/docs/020.getting-started/040.keyboard-shortcuts.md

@@ -84,6 +84,10 @@ To navigate within ⌘+K menu,
 |       `⌘` + `c` | Copy cell contents                                                                   |
 |       `⌘` + `v` | Paste copied contents                                                                |
 |     `alt` + `r` | Inserts new record in grid view                                                      |
+|     `alt` + `↑` | Jump to first page in this view                                                      |
+|     `alt` + `↓` | Jump to last page in this view                                                       |
+|     `alt` + `←` | Jump to previous page in this view                                                   |
+|     `alt` + `→` | Jump to next page in this view                                                       |
 
 
 ## Field type specific shortcuts