Fix wildcard/regex usage formatting

Fix whitespace issue and missing backslashes in the regex example.

Signed-off-by: Mcat12 <newtoncat12@yahoo.com>

manpages/pihole.8

@@ -282,10 +282,10 @@ Some usage examples
 .br
     \fBpihole -b -d noads.example.com\fR       Remove "noads.example.com" from blacklist
 .br
-    \fBpihole --wild example.com\fR             Add example.com as a wildcard - would
+    \fBpihole --wild example.com\fR            Add example.com as a wildcard - would
     block all subdomains of example.com, including example.com itself.
 .br
-    \fBpihole --regex "ad.*\.example\.com$"\fR  Add "ad.*\.example\.com$" to the regex
+    \fBpihole --regex "ad.*\\.example\\.com$"\fR Add "ad.*\\.example\\.com$" to the regex
     blacklist - would block all subdomains of example.com which start with "ad"
 .br