message: docs(CohortDateRange): update outdated docs
diff: @@ -26,7 +26,6 @@ Pass in the cohorts:
  ></ts-cohort-date-range>
  ```
  -```typescript
  ```typescript
  cohorts: TsDateCohort[] = [
  {
  @@ -39,8 +38,8 @@ cohorts: TsDateCohort[] = [
  {
  display: 'Last full month',
  range: {
  - startDate: new Date(2019, 8, 1),
  - endDate: new Date(2019, 8, 31),
  + start: new Date(2019, 8, 1),
  + end: new Date(2019, 8, 31),
  },
  },
  ];
  @@ -63,7 +62,6 @@ The keys inside the passed in `cohorts` object must match the `TsDateCohort` int
  The first `TsDateCohort` that has the `active` key set to `true` will be selected by default.
  -```typescript
  ```typescript
  cohorts: TsDateCohort[] = [
  {
  