Update examples URLs

Author: swo

docs/data_developer_guide.md

@@ -22,16 +22,15 @@ The ETL pipeline system is built around:
 - SQL templates for transformations (optional)
 - Schema validation using Pandera
 
-## Examples
+### Example
 
-There are many dataset examples in this repository that can serve as references while creating yours. To get started, take a look at [`cfa/dataops/datasets/scenarios/covid19_vaccination_trends.toml`](../cfa/dataops/datasets/scenarios/covid19_vaccination_trends.toml).
+There are many datasets in this repository that can serve as references while creating yours. For example, the `covid19vax_trends` dataset:
 
-The code related to this example dataset can be found in these files:
-
-- [`cfa/dataops/datasets/scenarios/schemas/covid19vax_trends.py`](../cfa/dataops/datasets/scenarios/schemas/covid19vax_trends.py)
-- [`cfa/dataops/etl/scenarios/covid19vax_trends.py`](../cfa/dataops/etl/scenarios/covid19vax_trends.py)
-- [`cfa/dataops/etl/transform_templates/scenarios/covid19vax_trends.sql`](../cfa/dataops/etl/transform_templates/scenarios/covid19vax_trends.sql)
-- [`tests/datasets/test_covid19_vax_trends.py`](../tests/datasets/test_covid19_vax_trends.py)
+- [TOML configuration](https://github.com/CDCgov/cfa-dataops/blob/main/cfa/dataops/datasets/scenarios/covid19_vaccination_trends.toml)
+- [Schema and synthetic data](https://github.com/CDCgov/cfa-dataops/blob/main/cfa/dataops/datasets/scenarios/schemas/covid19vax_trends.py)
+- [ETL script](https://github.com/CDCgov/cfa-dataops/blob/main/cfa/dataops/etl/scenarios/covid19vax_trends.py)
+- [ETL SQL](https://github.com/CDCgov/cfa-dataops/blob/main/cfa/dataops/etl/transform_templates/scenarios/covid19vax_trends.sql)
+- [Unit tests](https://github.com/CDCgov/cfa-dataops/blob/main/tests/datasets/test_covid19_vax_trends.py)
 
 ## Update an existing dataset
 

docs/index.md

@@ -2,3 +2,4 @@
 
 - [Data User Guide](data_user_guide.md)
 - [Data Developer Guide](data_developer_guide.md)
+- [API reference](api.md)