Fix/map fluency academic subjects (#115)

* Fix acadmeicSubjects array

* Remove white space

Author: ryanaguilar

assessments/MAP_Fluency/templates/assessments.jsont

@@ -5,7 +5,7 @@
   "namespace": "{{namespace}}",
   "assessedGradeLevels": [{{grade_json}}],
   "assessmentCategoryDescriptor": "{{assessmentCategoryDescriptor}}",
-  "academicSubjects": ["{{academicSubjectDescriptor}}"],
+  "academicSubjects": [{"academicSubjectDescriptor":"{{academicSubjectDescriptor}}"}],
   "scores": [
       {
         "assessmentReportingMethodDescriptor": "uri://www.nwea.org/mapFluency/AssessmentReportingMethodDescriptor#Result Type",
@@ -16,4 +16,4 @@
         "resultDatatypeTypeDescriptor": "{{descriptor_namespace}}/ResultDatatypeTypeDescriptor#Level"
       }
   ]
-}
+}