Replace '_' in paths in werc's docs section with '-', and set up apropriate redirects to avoid broken links.

sites/werc.cat-v.org/docs/web-server-setup/lighttpd.md

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+Setup werc with lighttpd
+========================
+
+You will need to enable to the following modules: `mod_cgi`, `mod_alias` and `mod_rewrite` (for non-minimal configurations).
+
+You can also find `mod_setenv` useful to change werc's environment ($PATH in perticular)
+
+Minimal setup
+-------------
+This is the most minimal setup, for a single domain, and lets werc handle static files.
+
+    $HTTP["host"] =~ "^test\.cat-v\.org$" {
+        index-file.names = ( )
+        server.error-handler-404 = "/werc.rc"
+        alias.url       += ( "/werc.rc" => "/var/www/cat-v.org/bin/werc.rc" ) # Here use the path to werc.rc in your system.
+        cgi.assign += ( ".rc" => "")
+        server.dir-listing = "disable"
+    }
+
+Advanced setup
+--------------
+
+A more ellaborate setup, using virtual hosts to handle multiple domains, and
+alias to let lighttpd handle static files.  Also show how to add external cgi's
+to the setup, in this case Mercurial's web interface.
+
+    $HTTP["host"] =~ "^((harmful|9p|gsoc|doc|uriel|src|repo|www|)(\.|)cat-v\.org|(www\.)?binarydream.org|)$" {
+
+        index-file.names = ( )
+        evhost.path-pattern     = "/var/www/cat-v.org/sites/%3.%0/"
+        server.error-handler-404 = "/werc.rc"
+
+        alias.url       += ( "/pub/" => "/var/www/cat-v.org/pub/" )
+        alias.url       += ( "/favicon.ico" => "/var/www/cat-v.org/pub/default_favicon.ico" )
+        alias.url       += ( "/doc/" => "/var/www/cat-v.org/sites/doc.cat-v.org/" )
+        alias.url       += ( "/werc.rc" => "/var/www/cat-v.org/bin/werc.rc" )
+        alias.url       += ( "/debug.rc" => "/var/www/cat-v.org/bin/debug.rc" )
+        cgi.assign += ( ".rc" => "")
+        server.dir-listing = "disable"
+
+        cgi.assign += ( ".cgi" => "")
+        url.rewrite-once = ( "/hg/(.*)" => "/hg/hgwebdir.cgi/$1" )
+        alias.url       += ( "/hg/" => "/var/www/cat-v.org/bin/"  )
+    }