virsh: remove a badly placed line break in virsh -h output

The output was previously:

    -c | --connect <uri>    hypervisor connection URI
    -r | --readonly         connect readonly
    -d | --debug <num>      debug level [0-5]
    -h | --help             this help
    -q | --quiet            quiet mode
    -t | --timing           print timing information
    -l | --log <file>       output logging to file
    -v | --version[=short]  program version

    -V | --version=long     version and full options

(note the blank line between the --version types)

This patch removes the extra blank line.

tools/virsh.c

@@ -11694,7 +11694,7 @@ vshUsage(void)
                       "    -q | --quiet            quiet mode\n"
                       "    -t | --timing           print timing information\n"
                       "    -l | --log <file>       output logging to file\n"
-                      "    -v | --version[=short]  program version\n\n"
+                      "    -v | --version[=short]  program version\n"
                       "    -V | --version=long     version and full options\n\n"
                       "  commands (non interactive mode):\n\n"), progname, progname);