Update # of datasets for systems.csv (#72)

docs/toolbox/index.md

@@ -6,7 +6,7 @@
 <ul>
 <li><a href="https://gbfs-validator.mobilitydata.org/"><strong>GBFS Validator</strong></a> - The Canonical GBFS Validator is a tool to check the conformity of a GBFS feed against the official specification including past releases and release candidates.</li>
 <li><a href="https://github.com/MobilityData/gbfs-json-schema"><strong>JSON Schemas</strong></a> - A set of JSON schemas is available for each version of the specification as well as the current release candidate. The Canonical GBFS Validator is based on these schemas.</li>
-<li><a href="https://github.com/NABSA/gbfs/blob/master/systems.csv"><strong>Dataset Catalog</strong></a> -  There are now over 600 shared mobility systems publishing GBFS worldwide. A catalog of these GBFS feeds is maintained by the GBFS community on the GBFS repo. This is an incomplete list. If you have or are aware of a feed that does not appear on the list please add it.</li>
+<li><a href="https://github.com/NABSA/gbfs/blob/master/systems.csv"><strong>Dataset Catalog</strong></a> -  There are now over 900 shared mobility systems publishing GBFS worldwide. A catalog of these GBFS feeds is maintained by the GBFS community on the GBFS repo. This is an incomplete list. If you have or are aware of a feed that does not appear on the list please add it.</li>
 </ul></div>
 
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