patch 8.2.2958: function list test fails

Problem:    Function list test fails.
Solution:   Add newly added function to the list.  Fix typo.

runtime/doc/usr_41.txt

@@ -952,6 +952,7 @@ Interactive:					*interactive-functions*
 	browsedir()		put up a directory requester
 	confirm()		let the user make a choice
 	getchar()		get a character from the user
+	getcharstr()		get a character from the user as a string
 	getcharmod()		get modifiers for the last typed character
 	getmousepos()		get last known mouse position
 	echoraw()		output characters as-is

src/testdir/test_function_lists.vim

@@ -96,7 +96,7 @@ func Test_function_lists()
   sort u
   w! ++ff=unix Xfunction-list
   let l:unequal = assert_equalfile("Xsorted_current_global_functions", "Xfunction-list",
-      \ "\":help functions-list\" incomplete")
+      \ "\":help function-list\" incomplete")
   if l:unequal && executable("diff")
     call system("diff -u Xsorted_current_global_functions Xfunction-list > Xfunction-list.diff")
   endif

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2958,
 /**/
     2957,
 /**/