Fixed scara directions

Config said for a delta instead of for a scara

Marlin/Configuration.h

@@ -31,7 +31,7 @@ Here are some standard links for getting your machine calibrated:
 //===========================================================================
 //============================= SCARA Printer ===============================
 //===========================================================================
-// For a Delta printer replace the configuration files with the files in the
+// For a Scara printer replace the configuration files with the files in the
 // example_configurations/SCARA directory.
 //