[tests] Fix typo on the class name for PluginA's input node

Author: cbentejac

tests/plugins/meshroom/pluginA/PluginAInputNode.py

@@ -3,7 +3,7 @@
 from meshroom.core import desc
 
 
-class PluginANodeA(desc.InputNode):
+class PluginAInputNode(desc.InputNode):
     inputs = [
         desc.File(
             name="input",