Correction to shape of example NdArray

Author: jonblower

standard/clause_specification_text.adoc

@@ -669,7 +669,7 @@ Example:
 {
   "type": "NdArray",
   "dataType": "float",
-  "shape": [4, 2],
+  "shape": [2, 4],
   "axisNames": ["y", "x"],
   "values": [
     12.3, 12.5, 11.5, 23.1,