Arrange example configurations by vendor

Marlin/example_configurations/AliExpress/CL-260/Configuration.h

@@ -74,7 +74,7 @@
 // User-specified version info of this build to display in [Pronterface, etc] terminal window during
 // startup. Implementation of an idea by Prof Braino to inform user that any changes made to this
 // build by the user have been successfully uploaded into firmware.
-#define STRING_CONFIG_H_AUTHOR "(none, example CL-260 config)" // Who made the changes.
+#define STRING_CONFIG_H_AUTHOR "(none, CL-260)" // Who made the changes.
 #define SHOW_BOOTSCREEN
 #define STRING_SPLASH_LINE1 SHORT_BUILD_VERSION // will be shown during bootup in line 1
 #define STRING_SPLASH_LINE2 WEBSITE_URL         // will be shown during bootup in line 2

Marlin/example_configurations/AliExpress/CL-260/README.txt

@@ -1,4 +1,4 @@
-This is an example configuration for the CL-260.
+This is an example configuration for the CL-260 Ultimaker 2 clone.
 Change Z_MAX_POS to 300 for the CL-260MAX.
 
 (The printer is available on AliExpress; be aware that this is not a beginner's