docs: update actor tagged builds manually

apify-api/openapi/components/schemas/actors/UpdateActorRequest.yaml

@@ -50,3 +50,15 @@ properties:
     oneOf:
       - nullable: true
       - $ref: ./DefaultRunOptions.yaml
+  taggedBuilds:
+    type: object
+    additionalProperties:
+      type: object
+      required:
+        - buildId
+      properties:
+        buildId:
+          type: string
+    example:
+      latest:
+        buildId: z2EryhbfhgSyqj6Hn

sources/platform/actors/running/runs_and_builds.md

@@ -17,7 +17,7 @@ An Actor is a combination of source code and various settings in a Docker contai
 A Docker image is a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries, and settings. For more information visit Docker's [site](https://www.docker.com/resources/what-container/).
 :::
 
-With every new version of an Actor, a new build is created. Each Actor build has its number (for example, **1.2.34**), and some builds are tagged for easier use (for example, _latest_ or _beta_). When running an Actor, you can choose what build you want to run by selecting a tag or number in the run options.
+With every new version of an Actor, a new build is created. Each Actor build has its number (for example, **1.2.34**), and some builds are tagged for easier use (for example, _latest_ or _beta_). When running an Actor, you can choose what build you want to run by selecting a tag or number in the run options. To change which build a tag refers to, you can reassign it using the [Actor update](/api/v2/act-put) API endpoint.
 
 ![Actor run options](./images/runs_and_builds/actor-run-options.png)