vi: Bind \cx to end-of-line in insert mode

This will also accept any autosuggestion completely.

doc_src/index.hdr.in

@@ -958,6 +958,8 @@ Command mode is also known as normal mode.
 
 - @key{Control,B} and @key{Control,F} move the cursor one word left or right. If the cursor is already at the end of the line, and an autosuggestion is available, @key{Control,F} accepts the first word in the suggestion.
 
+- @key{Control,x} moves the cursor to the end of the line. If an autosuggestion is available, it will be accepted completely.
+
 \subsubsection vi-mode-visual Visual mode
 
 - @cursor_key{←,Left} and @cursor_key{→,Right} extend the selection backward/forward by one character.

share/functions/fish_vi_key_bindings.fish

@@ -163,7 +163,7 @@ function fish_vi_key_bindings --description 'vi-like key bindings for fish'
 
   ### Overrides
   # This is complete in vim
-  bind \cx end-of-line
+  bind -M insert \cx end-of-line
   bind -M insert \cf forward-word
 
   bind '"*p' "commandline -i ( xsel -p; echo )[1]"