Renamed indicator `description`/`detail` to `htmlDescription`/`htmlDetail`:

Communicated and agreed with HC.

schemas/IndicatorDetail.yaml

@@ -14,10 +14,10 @@ properties:
     $ref: 'Indicator.yaml#/properties/type'
   refDate:
     $ref: 'IndicatorSet.yaml#/properties/refDate'
-  description:
+  htmlDescription:
     description: A more detailed description of what this indicator calculates. *HTML*
     type: string
-  descriptionDetail:
+  htmlDescriptionDetail:
     description: |-
       *OPTIONAL* A description of which exact formulas and codes are checked to calculate this indicator. *HTML*.
     type: string

schemas/IndicatorParticipants.yaml

@@ -14,10 +14,10 @@ properties:
     $ref: 'Indicator.yaml#/properties/type'
   refDate:
     $ref: 'IndicatorSet.yaml#/properties/refDate'
-  description:
+  htmlDescription:
-    $ref: 'IndicatorDetail.yaml#/properties/description'
+    $ref: 'IndicatorDetail.yaml#/properties/htmlDescription'
-  descriptionDetail:
+  htmlDescriptionDetail:
-    $ref: 'IndicatorDetail.yaml#/properties/descriptionDetail'
+    $ref: 'IndicatorDetail.yaml#/properties/htmlDescriptionDetail'
   xMin:
     $ref: 'Indicator.yaml#/properties/xMin'
   xMax: