Fix and update docs

doc/help/commands.asciidoc

@@ -530,7 +530,7 @@ Show help about a command or setting.
 
 [[hint]]
 === hint
-Syntax: +:hint [*--mode* 'mode'] [*--add-history*] [*--rapid*]
+Syntax: +:hint [*--mode* 'mode'] [*--add-history*] [*--rapid*] [*--first*]
      ['group'] ['target'] ['args' ['args' ...]]+
 
 Start hinting.
@@ -600,6 +600,7 @@ Start hinting.
  `tab` (with `tabs.background_tabs=true`), `tab-bg`,
  `window`, `run`, `hover`, `userscript` and `spawn`.
 
+* +*-f*+, +*--first*+: Click the first hinted element without prompting.
 
 ==== note
 * This command does not split arguments after the last argument and handles quotes literally.

doc/help/settings.asciidoc

@@ -562,6 +562,7 @@ Default:
 * +pass:[gd]+: +pass:[download]+
 * +pass:[gf]+: +pass:[view-source]+
 * +pass:[gg]+: +pass:[scroll-to-perc 0]+
+* +pass:[gi]+: +pass:[hint inputs --first]+
 * +pass:[gl]+: +pass:[tab-move -]+
 * +pass:[gm]+: +pass:[tab-move]+
 * +pass:[go]+: +pass:[set-cmd-text :open {url:pretty}]+

qutebrowser/browser/hints.py

@@ -636,8 +636,8 @@ class HintManager(QObject):
                    `window`, `run`, `hover`, `userscript` and `spawn`.
             add_history: Whether to add the spawned or yanked link to the
                          browsing history.
-            group: The element types to hint.
             first: Click the first hinted element without prompting.
+            group: The element types to hint.
 
                 - `all`: All clickable elements.
                 - `links`: Only links.