Add key 'K' to toggle selection

README.md

@@ -255,7 +255,7 @@ Press <kbd>?</kbd> in `nnn` to see the list anytime.
            ^O  Open with...      n  Create new/link
             D  File details     ^R  Rename entry
          ⎵ ^K  Select entry      r  Open dir in vidir
-           ^Y  Toggle selection  y  List selection
+         K ^Y  Toggle selection  y  List selection
             Y  Select all
             P  Copy selection    X  Delete selection
             V  Move selection   ^X  Delete entry

nnn.1

@@ -98,7 +98,7 @@ Show entry details
 Rename selected entry
 .It Ic r
 Open directory in vidir
-.It Ic Y, ^Y
+.It Ic K, ^Y
 Toggle selection mode
 .It Ic Y
 Select all entries in dir

src/nnn.c

@@ -2420,7 +2420,7 @@ static bool show_help(char *path)
 		 "b^O  Open with...      n  Create new/link\n"
 		  "cD  File details     ^R  Rename entry\n"
 	       "9⎵ ^K  Select entry      r  Open dir in vidir\n"
-		 "b^Y  Toggle selection  y  List selection\n"
+	       "9K ^Y  Toggle selection  y  List selection\n"
 		  "cY  Select all\n"
 		  "cP  Copy selection    X  Delete selection\n"
 		  "cV  Move selection   ^X  Delete entry\n"

src/nnn.h

@@ -189,6 +189,7 @@ static struct key bindings[] = {
 	{ CONTROL('K'),   SEL_COPY },
 	{ ' ',            SEL_COPY },
 	/* Toggle copy multiple file paths */
+	{ 'K',            SEL_COPYMUL },
 	{ CONTROL('Y'),   SEL_COPYMUL },
 	/* Select all files in current dir */
 	{ 'Y',            SEL_COPYALL },