correct Firefox URL and spelling errors in manpage

firefox/firefox.pod

@@ -40,10 +40,10 @@ B<firefox>
 =head1 DESCRIPTION
 
 The B<firefox> command is small startup control utility for the
-B<Mozilla Firefox> browser (http://www.mozilla.org/). It makes sure that
-no more than one B<Mozilla Firefox> instance is running at the same time
-and allows you to conveniently load URLs from the command line into new
-browser windows, new browser tabs or into the currently open browser
+B<Mozilla Firefox> browser (http://www.getfirefox.com/). It makes sure
+that no more than one B<Mozilla Firefox> instance is running at the same
+time and allows you to conveniently load URLs from the command line into
+new browser windows, new browser tabs or into the currently open browser
 view.
 
 The following command line options are recognized:
@@ -76,7 +76,7 @@ The following URL(s) are recognized on the command line:
 
 =item C<http://>..., C<https://...>, C<ftp://>...
 
-Fully qualified URLs are passed through as-is.
+Fully qualified URLs are passed through as is.
 
 =item C<google:>I<wordlist>
 
@@ -114,7 +114,7 @@ Trys to autodetect the query.
 
 =back 
 
-Additionally any URL argument can contain an at-sign ("C<@>"), which
+Additionally any URL argument can contain an at sign ("C<@>"), which
 is replaced with the current contents of the X11 selection buffer.
 
 =head1 SEE ALSO