Correct category order metadata for "Cloud"

As part of the deprecation of the "Cloud" category, it was moved under the "Recycle Bin" category. The category order
metadata was not updated at that time.

Author: per1234

content/categories/order.md

@@ -7,7 +7,6 @@
   - IDE 1.x
   - Uploading
   - Cloud Editor
-  - Cloud
   - Cloud IoT
   - Cloud Chrome App
   - Arduino Command Line Tools
@@ -174,6 +173,7 @@
     - Playground Wiki
   - Recycle Bin
     - Arduino SIM
+    - Cloud
     - Development
     - E-Textiles and Craft
     - Emergency Response: Covid-19 Projects