fix typo

readme.mustache

@@ -172,7 +172,7 @@ This data has been gathered from far too many sources to mention, but some sites
 ## LICENSE
 
 Copyright (C) 2022-2024 by SDR-Enthusiasts, Ramon F. Kolb (kx1t), and contributors.
-A list of contributurs can be found at <https://github.com/sdr-enthusiasts/plane-alert-db/graphs/contributors>
+A list of contributors can be found at <https://github.com/sdr-enthusiasts/plane-alert-db/graphs/contributors>
 
 This Database is made available under the Open Database License: <http://opendatacommons.org/licenses/odbl/1.0/>
 Any rights in individual contents of the database are licensed under the Database Contents License: <http://opendatacommons.org/licenses/dbcl/1.0/>