docs: generate entry for hover_dump

Author: nik-rev

book/src/generated/static-cmd.md

@@ -200,6 +200,7 @@
 | `remove_primary_selection` | Remove primary selection | normal: `` <A-,> ``, select: `` <A-,> `` |
 | `completion` | Invoke completion popup | insert: `` <C-x> `` |
 | `hover` | Show docs for item under cursor | normal: `` <space>k ``, select: `` <space>k `` |
+| `hover_dump` | Show docs for item under cursor in a new buffer | normal: `` <space>K ``, select: `` <space>K `` |
 | `toggle_comments` | Comment/uncomment selections | normal: `` <C-c> ``, `` <space>c ``, select: `` <C-c> ``, `` <space>c `` |
 | `toggle_line_comments` | Line comment/uncomment selections | normal: `` <space><A-c> ``, select: `` <space><A-c> `` |
 | `toggle_block_comments` | Block comment/uncomment selections | normal: `` <space>C ``, select: `` <space>C `` |