Fix docs to say XDG_DATA_HOME instead of _DIR

doc/changelog.asciidoc

@@ -1631,7 +1631,7 @@ Changed
   `tabs.bg/fg.selected.odd/even`.
 - `:spawn --userscript` and `:hint` with the `userscript` target now look up
   relative paths in `~/.local/share/qutebrowser/userscripts` or
-  `$XDG_DATA_DIR`. Using a binary in `$PATH` won't work anymore with
+  `$XDG_DATA_HOME`. Using a binary in `$PATH` won't work anymore with
   `--userscript`.
 - New design for error pages
 - Link filtering for hints now checks if the text is contained anywhere in

doc/help/commands.asciidoc

@@ -576,7 +576,7 @@ Start hinting.
  - With `userscript`: The userscript to execute. Either store
  the userscript in
  `~/.local/share/qutebrowser/userscripts`
- (or `$XDG_DATA_DIR`), or use an absolute
+ (or `$XDG_DATA_HOME`), or use an absolute
  path.
  - With `fill`: The command to fill the statusbar with.
  `{hint-url}` will get replaced by the selected
@@ -1193,7 +1193,7 @@ Spawn a command in a shell.
 * +*-u*+, +*--userscript*+: Run the command as a userscript. You can use an absolute path, or store the userscript in one of those
  locations:
  - `~/.local/share/qutebrowser/userscripts`
- (or `$XDG_DATA_DIR`)
+ (or `$XDG_DATA_HOME`)
  - `/usr/share/qutebrowser/userscripts`
 
 * +*-v*+, +*--verbose*+: Show notifications when the command started/exited.

qutebrowser/browser/commands.py

@@ -1183,7 +1183,7 @@ class CommandDispatcher:
                         absolute path, or store the userscript in one of those
                         locations:
                             - `~/.local/share/qutebrowser/userscripts`
-                              (or `$XDG_DATA_DIR`)
+                              (or `$XDG_DATA_HOME`)
                             - `/usr/share/qutebrowser/userscripts`
             verbose: Show notifications when the command started/exited.
             output: Whether the output should be shown in a new tab.

qutebrowser/browser/hints.py

@@ -693,7 +693,7 @@ class HintManager(QObject):
                 - With `userscript`: The userscript to execute. Either store
                                      the userscript in
                                      `~/.local/share/qutebrowser/userscripts`
-                                     (or `$XDG_DATA_DIR`), or use an absolute
+                                     (or `$XDG_DATA_HOME`), or use an absolute
                                      path.
                 - With `fill`: The command to fill the statusbar with.
                                 `{hint-url}` will get replaced by the selected

qutebrowser/commands/userscripts.py

@@ -432,7 +432,7 @@ def run_async(tab, cmd, *args, win_id, env, verbose=False):
     cmd_path = os.path.expanduser(cmd)
 
     # if cmd is not given as an absolute path, look it up
-    # ~/.local/share/qutebrowser/userscripts (or $XDG_DATA_DIR)
+    # ~/.local/share/qutebrowser/userscripts (or $XDG_DATA_HOME)
     if not os.path.isabs(cmd_path):
         log.misc.debug("{} is no absolute path".format(cmd_path))
         cmd_path = _lookup_path(cmd)