[Spamassassin Wiki] Update of "RuleUpdates" by JustinMason

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The following page has been changed by JustinMason:
http://wiki.apache.org/spamassassin/RuleUpdates

The comment on the change is:
fix command line

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    Can I use sa-update as non-root too?:: Of course. It works just fine as non-root for personal installations. Updates end up in $HOME/var, which is where your SingleUserUnixInstall of SpamAssassin will look for them.
  
-   What if I need update requests to go through a proxy server?::  sa-update uses the `LWP::UserAgent` module, which allows certain environment variables to be set so that requests use defined proxy servers.  The main one of interest is "http_proxy", which should be set to an URL defining the proxy.  ie: {{{export http_proxy 'http://proxy.example.com:8080/'}}}
+   What if I need update requests to go through a proxy server?::  sa-update uses the `LWP::UserAgent` module, which allows certain environment variables to be set so that requests use defined proxy servers.  The main one of interest is "http_proxy", which should be set to an URL defining the proxy.  ie: {{{export http_proxy='http://proxy.example.com:8080/'}}}
  
  For more information about how to use sa-update and how it works, please read below.