Remove reference to byteStride for indices buffer, weaken target

specification/2.0/schema/mesh.primitive.schema.json

@@ -17,7 +17,7 @@
         "indices": {
             "allOf": [ { "$ref": "glTFid.schema.json" } ],
             "description": "The index of the accessor that contains the indices.",
-            "gltf_detailedDescription": "The index of the accessor that contains mesh indices.  When this is not defined, the primitives should be rendered without indices using `drawArrays()`.  When defined, the accessor must contain indices: the `bufferView` referenced by the accessor must have a `target` equal to 34963 (ELEMENT_ARRAY_BUFFER); a `byteStride` that is tightly packed, i.e., 0 or the byte size of `componentType` in bytes; `componentType` must be 5121 (UNSIGNED_BYTE), 5123 (UNSIGNED_SHORT) or 5125 (UNSIGNED_INT), the latter is only allowed when `OES_element_index_uint` extension is used; `type` must be `\"SCALAR\"`."
+            "gltf_detailedDescription": "The index of the accessor that contains mesh indices.  When this is not defined, the primitives should be rendered without indices using `drawArrays()`.  When defined, the accessor must contain indices: the `bufferView` referenced by the accessor should have a `target` equal to 34963 (ELEMENT_ARRAY_BUFFER); `componentType` must be 5121 (UNSIGNED_BYTE), 5123 (UNSIGNED_SHORT) or 5125 (UNSIGNED_INT), the latter may require enabling additional hardware support; `type` must be `\"SCALAR\"`."
         },
         "material": {
             "allOf": [ { "$ref": "glTFid.schema.json" } ],