Add CHANGELOG entry about openeo.extra.spectral_indices update

Author: soxofaan

CHANGELOG.md

@@ -35,6 +35,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Deprecate `DataCube.send_job` in favor of `DataCube.create_job` for better consistency (internally and with other libraries) ([#276](https://github.com/Open-EO/openeo-python-client/issues/276))
 - Update (autogenerated) `openeo.processes` module to 1.2.0 release (2021-12-13) of openeo-processes
 - Update (autogenerated) `openeo.processes` module to draft version of 2022-03-16 (e4df8648) of openeo-processes
+- Update `openeo.extra.spectral_indices` to a post-0.0.6 version of [Awesome Spectral Indices](https://awesome-ee-spectral-indices.readthedocs.io/en/latest/)
+
 
 ### Removed
 

openeo/extra/spectral_indices/resources/README.md

@@ -3,6 +3,7 @@ Spectral Index specification files, derived from and based on the
 [Awesome Spectral Indices](https://awesome-ee-spectral-indices.readthedocs.io/) project
 by [David Montero Loaiza](https://github.com/davemlz)
 
-- `awesome-spectral-indices/spectral-indices-dict.json` comes straight from https://github.com/davemlz/awesome-spectral-indices/blob/main/output/spectral-indices-dict.json
+- `awesome-spectral-indices/spectral-indices-dict.json` comes straight 
+   from [here](https://github.com/davemlz/awesome-spectral-indices/blob/main/output/spectral-indices-dict.json)
 - `extra-indixes-dict.json` is a set of additional indices not (yet) provided by Awesome Spectral Indices