updated heading and added so tag "revision" is ok

Author: jhansson-ard

content/hardware/06. edu/kits/braccio++/datasheets/datasheet.md

@@ -201,7 +201,7 @@ Hereby, Arduino S.r.l. declares that this product is in compliance with essentia
 | 2400-2483.5 Mhz | 17 dBm                     |
 
 
-## Company information
+## Company Information
 
 | Company name    | Arduino S.r.l.                                                |
 | --------------- | ------------------------------------------------------------- |

scripts/validation/rules/datasheet-metadata-schema.json

@@ -32,7 +32,8 @@
     "required": [
       "title",
       "identifier",
-      "type"
+      "type",
+      "revision"
     ],
     "additionalProperties" : false
   }