docs: add digest search to What's New

Signed-off-by: mbshields <[email protected]>

docs/developer-guide/api-user-guide.md

@@ -57,7 +57,7 @@ For comprehensive details of the API endpoints, see [Viewing the complete zot AP
 
 | Endpoint | Actions | Description | Availability |
 | -------- | ------- | ----------- | -------------|
-| /v2/_zot/pprof/ | GET | Returns a current HTML-format profile list along with a count of currently available records for each profile. See [Performance Profiling in zot](../articles/pprof.md) for usage details. | Always enabled. |
+| /v2/_zot/pprof/ | GET | Returns a current HTML-format profile list along with a count of currently available records for each profile. See [Performance Profiling in zot](../articles/pprofiling.md) for usage details. | Always enabled. |
 | /v2/_zot/debug/graphql-playground# |  | See [Using GraphQL](../articles/graphql.md) for details. | Enabled only in a `binary-debug` zot build or when the zot registry has been built with the `debug` extension label. |
 
 

docs/general/whats-new.md

@@ -56,6 +56,10 @@
 
 - The [`zli search`](../user-guides/zli.md#_zli-search) command allows smart searching for a repository by its name or for an image by its repo:tag.
 
+### Search by digest
+
+- You can perform a global search for a digest (SHA hash) using either the UI or the CLI. This function is useful when an issue is found in a layer that is used by multiple images. In the UI Search box, for example, begin typing `sha:` followed by a partial or complete digest value to see a dropdown list of images that contain the layer with the digest value.
+
 ### GraphQL support for search
 
 - A [GraphQL backend server](../articles/graphql.md) within zot's registry search engine provides efficient and enhanced search capabilities. In addition to supporting direct GraphQL queries through the API, zot hosts the GraphQL Playground, which provides an interactive graphical environment for GraphQL queries.