[#105] set the context of MedicationIngredientRole extension to Medication.ingredient

Author: dvribeira

input/fsh/extensions/extensions.fsh

@@ -136,7 +136,7 @@ Extension: MedicationIngredientRole
 Id:        ihe-ext-medication-ingredient-role
 Title:     "Medication - Ingreditne role"
 Description: "Medication ingredient role - whether it is an active ingredient, excipient, adjuvant, solvent, flavouring, etc."
-Context: Medication
+Context: Medication.ingredient
 
 * value[x] only CodeableConcept 
 * valueCodeableConcept from http://hl7.org/fhir/ValueSet/ingredient-role (example)