Request change man/nwipe.1 to man/nwipe.8

Manpage is named nwipe.1 which would be correct but manpage
contains section 8 which forms a mismatch(warning) in Debian.

# Man sections
1   Executable programs or shell commands
2   System calls (functions provided by the kernel)
3   Library calls (functions within program libraries)
4   Special files (usually found in /dev)
5   File formats and conventions, e.g. /etc/passwd
6   Games
7   Miscellaneous (including macro packages and conventions), e.g. man(7), groff(7), man-pages(7)
8   System administration commands (usually only for root)
9   Kernel routines [Non standard]

(requested by MvB)

man/Makefile.am

@@ -1 +1 @@
-dist_man_MANS = nwipe.1
+dist_man_MANS = nwipe.8