Updated contributor list.

Author: hcpchris

docs/_contributors.rst

@@ -1,4 +1,6 @@
 * Chris Modzelewski (`@hcpchris <https://github.com/hcpchris>`__ / `@insightindustry <https://github.com/insightindustry>`__)
 * Erin Modzelewski (`@EBModz <https://github.com/EBModz>`__)
 * Jitendra Mishra (`@jmishra01 <https://github.com/jmishra01>`__)
-* Byron Cook (`@ByronCook <https://github.com/ByronCook>`__)
+* Byron Cook (`@ByronCook <https://github.com/ByronCook>`__)
+* karlacio (`@karlacio <https://github.com/karlacio>`__)
+* Max Dugan Knight (`@maxduganknight <https://github.com/maxduganknight>`__)