patch 8.0.1787: cannot insert the whole cursor line

Problem:    Cannot insert the whole cursor line.
Solution:   Make CTRL-R CTRL-L work. (Andy Massimino, closes #2857)
diff --git a/runtime/doc/cmdline.txt b/runtime/doc/cmdline.txt
index d87d4fe..25577a2 100644
--- a/runtime/doc/cmdline.txt
+++ b/runtime/doc/cmdline.txt
@@ -175,12 +175,14 @@
 CTRL-R CTRL-P				*c_CTRL-R_CTRL-P* *c_<C-R>_<C-P>*
 CTRL-R CTRL-W				*c_CTRL-R_CTRL-W* *c_<C-R>_<C-W>*
 CTRL-R CTRL-A				*c_CTRL-R_CTRL-A* *c_<C-R>_<C-A>*
+CTRL-R CTRL-L				*c_CTRL-R_CTRL-L* *c_<C-R>_<C-L>*
 		Insert the object under the cursor:
 			CTRL-F	the Filename under the cursor
 			CTRL-P	the Filename under the cursor, expanded with
 				'path' as in |gf|
 			CTRL-W	the Word under the cursor
 			CTRL-A	the WORD under the cursor; see |WORD|
+			CTRL-L	the line under the cursor
 
 		When 'incsearch' is set the cursor position at the end of the
 		currently displayed match is used.  With CTRL-W the part of
@@ -192,8 +194,8 @@
 
 					*c_CTRL-R_CTRL-R* *c_<C-R>_<C-R>*
 					*c_CTRL-R_CTRL-O* *c_<C-R>_<C-O>*
-CTRL-R CTRL-R {0-9a-z"%#:-=. CTRL-F CTRL-P CTRL-W CTRL-A}
-CTRL-R CTRL-O {0-9a-z"%#:-=. CTRL-F CTRL-P CTRL-W CTRL-A}
+CTRL-R CTRL-R {0-9a-z"%#:-=. CTRL-F CTRL-P CTRL-W CTRL-A CTRL-L}
+CTRL-R CTRL-O {0-9a-z"%#:-=. CTRL-F CTRL-P CTRL-W CTRL-A CTRL-L}
 		Insert register or object under the cursor.  Works like
 		|c_CTRL-R| but inserts the text literally.  For example, if
 		register a contains "xy^Hz" (where ^H is a backspace),