Remove whitespace from spip version regex

Author: dwelch-r7

lib/msf/core/exploit/remote/http/spip.rb

@@ -23,11 +23,11 @@ def spip_version
     )
 
     return unless res
-    
+
     version = nil
 
     version_string = res.get_html_document.at('head/meta[@name="generator"]/@content')&.text
-    if version_string =~ /SPIP (.*) /
+    if version_string =~ /SPIP (.*)/
       version = ::Regexp.last_match(1)
     end