vim-patch:fd77161: runtime(doc): update doc for :horizontal

Revert the documentation for :horizontal from commit
0c3e57b403e0e3a1fefc because :horizontal cannot be shortened to :ho

closes: vim/vim#16362

fd771613b3

Co-authored-by: h-east <h.east.727@gmail.com>

runtime/doc/index.txt

@@ -1335,7 +1335,7 @@ tag		command		action ~
 |:highlight|	:hi[ghlight]	specify highlighting methods
 |:hide|		:hid[e]		hide current buffer for a command
 |:history|	:his[tory]	print a history list
-|:horizontal|	:ho[rizontal]	following window command work horizontally
+|:horizontal|	:hor[izontal]	following window command work horizontally
 |:insert|	:i[nsert]	insert text
 |:iabbrev|	:ia[bbrev]	like ":abbrev" but for Insert mode
 |:iabclear|	:iabc[lear]	like ":abclear" but for Insert mode

runtime/doc/windows.txt

@@ -253,8 +253,8 @@ and 'winminwidth' are relevant.
 		will be equalized only vertically.
 		Doesn't work for |:execute| and |:normal|.
 
-						*:ho* *:horizontal*
-:ho[rizontal] {cmd}
+						*:hor* *:horizontal*
+:hor[izontal] {cmd}
 		Execute {cmd}.  Currently only makes a difference for
 		the following commands:
 		- `:wincmd =`: equalize windows only horizontally.