feat(flagd): add support for azure blob

Improve in documentation

Co-authored-by: Michael Beemer <beeme1mr@users.noreply.github.com>
Signed-off-by: VMaievskyi <maievskyivyacheslav89@gmail.com>

Author: VMaievskyi

docs/feature_flag_source.md

@@ -83,7 +83,7 @@ sources:
     selector: 'source=database,app=weatherapp'  # flag filtering options
 ```
 
-### azblob
+### Azure Blob Storage
 
 Given below is an example configuration with provider type `azblob` and supported options,