The leading dot was lost in documentation in previous change
while moving file to another directory.
The usage of leading dot in non-home folder is not a common practice,
but this is the current behavior,
and this commit just update man page to match the code.
Also the man pages has a not that they are auto-generated by help2man.
I used help2man to update them,
but it's output has some problems (wrong formatting of copyrights).
So in addition to the only important change (naming fix)
there is some more changes:
* Formatting manually added to the list of config files.
* New option --screen-change-script auto-added by help2man
* Man files themselves and doc/UpdateManpages.txt now mention
that some manual work is needed after help2man
