Update docs

CHANGELOG.asciidoc

@@ -67,6 +67,7 @@ Changed
 - Completions for `:help` and `:bind` now also show hidden commands
 - The `:buffer` completion now also filters using the first column (id).
 - `:undo` has been improved to reopen tabs at the position they were closed.
+- `:navigate` now takes a count for `up`/`increment`/`decrement`.
 
 Deprecated
 ~~~~~~~~~~

README.asciidoc

@@ -183,6 +183,7 @@ Contributors, sorted by the number of commits in descending order:
 * skinnay
 * Zach-Button
 * Tomasz Kramkowski
+* Peter Rice
 * Ismail S
 * Halfwit
 * David Vogt

doc/help/commands.asciidoc

@@ -484,6 +484,7 @@ This tries to automatically click on typical _Previous Page_ or _Next Page_ link
 ==== count
 For `increment` and `decrement`, the number to change the URL by. For `up`, the number of levels to go up in the URL.
 
+
 [[open]]
 === open
 Syntax: +:open [*--implicit*] [*--bg*] [*--tab*] [*--window*] ['url']+

qutebrowser/browser/commands.py

@@ -505,8 +505,8 @@ class CommandDispatcher:
             tab: Open in a new tab.
             bg: Open in a background tab.
             window: Open in a new window.
-            count: How much to increment or decrement the URL by, or number of
-                   levels to go up in the current URL.
+            count: For `increment` and `decrement`, the number to change the URL
+                   by. For `up`, the number of levels to go up in the URL.
         """
         # save the pre-jump position in the special ' mark
         self.set_mark("'")