use 'w' for command wrapping as 'M' is already used

since 'M' is already used for sort-by-memory, as with:

    keys['M'] = actionSortByMemory;

reorder help info about shortcut keys

1 files changed, 3 insertions, 2 deletions

diff --git a/htop.1.in b/htop.1.in
index 48e5cee5..cd5562b6 100644
--- a/htop.1.in
+++ b/htop.1.in
@@ -119,8 +119,9 @@ update of system calls issued by the process.
 Display open files for a process: if lsof(1) is installed, pressing this key
 will display the list of file descriptors opened by the process.
 .TP
-.B M
-Display the command line of the highlighted process in multiple lines.
+.B w
+Display the command line of the selected process in a separate screen, wrapped
+onto multiple lines as needed.
 .TP
 .B F1, h, ?
 Go to the help screen