Fixed broken anchors in documentation (#3712)

## Changes
Fixed broken anchors in documentation

### Tests
- [x] manually tested

<img width="1268" alt="image"
src="https://github.com/user-attachments/assets/034f7fe5-013c-4023-8e84-3d9ed93946e3"
/>

Author: pritishpai

docs/ucx/docs/process/index.mdx

@@ -8,7 +8,7 @@ On a high level, the steps in migration process are:
 1. [assessment](/docs/reference/workflows#assessment-workflow)
 2. [group migration](/docs/reference/workflows#group-migration-workflow)
 3. [table migration](/docs/process/#table-migration-process)
-4. [HMS Federation](/docs/process/#hms-federation)
+4. [HMS Federation](/docs/process/#hive-metastore-federation-process)
 5. [data reconciliation](/docs/reference/workflows#post-migration-data-reconciliation-workflow)
 6. [code migration](/docs/reference/commands#code-migration-commands)
 7. [delta live table pipeline migration](/docs/process#delta-live-table-pipeline-migration-process)
@@ -291,7 +291,7 @@ The [`revert-migrated-tables` command](/docs/reference/commands#revert-migrated-
 the `upgraded_to` property on the source object. Use this command to allow for migrating a table or view again.
 
 
-## HMS Federation
+## Hive Metastore Federation Process
 
 Hive Metastore (HMS) Federation is a feature that allows HMS to be federated to a catalog.
 More information is available in the [Databricks documentation](https://docs.databricks.com/en/data-governance/unity-catalog/hms-federation/index.html).

docs/ucx/docs/reference/commands/index.mdx

@@ -676,21 +676,21 @@ $ databricks labs ucx migrate-dlt-pipelines [--include-pipeline-ids <comma separ
 These commands are for [Hive Metastore federation](/docs/process#hive-metastore-federation-process) and require the [assessment workflow](/docs/reference/workflows#assessment-workflow) to be completed.
 Hive Metastore federation creates a UC catalog that mirrors all the schemas and tables in the source Hive Metastore. It is an alternative to the [table migration process](/docs/process#table-migration-process).
 
-### `enable_hms_federation`
+### `enable-hms-federation`
 
 ```commandline
-$ databricks labs ucx enable_hms_federation
+$ databricks labs ucx enable-hms-federation
 ```
 
 This command sets the `enable_hms_federation` flag in the config.yml file to `True`.<br/>
 It is used to enable the Hive Metastore federation process.
 It is also used by the `migrate-locations` command to determine whether to set the [Fallback Mode](https://docs.databricks.com/en/data-governance/unity-catalog/hms-federation/hms-federation-internal.html) to "True" in the newly created external locations.
 In AWS it also also allows the creation a GLUE role if one is required using the `create-missing-principals` command.
 
-### `create_federated_catalog`
+### `create-federated-catalog`
 
 ```commandline
-$ databricks labs ucx create_federated_catalog
+$ databricks labs ucx create-federated-catalog
 ```
 
 This command performs the following steps:

docs/ucx/docs/reference/workflows/index.mdx

@@ -107,7 +107,7 @@ A Databricks admin [assigns account groups to workspaces](https://docs.databrick
 using [identity federation](https://docs.databricks.com/en/admin/users-groups/index.html#enable-identity-federation)
 to manage groups from a single place: your Databricks account. We expect UCX users to create account groups
 centrally while most other Databricks resources that UCX touches are scoped to a single workspace.
-For extra confidence, run [`validate-groups-membership` command](#validate-groups-membership-command) before running the
+For extra confidence, run [`validate-groups-membership` command](/docs/reference/commands#validate-groups-membership) before running the
 group migration. If you do not have account groups matching groups in the workspace in which UCX is installed, you can
 run [`create-account-groups` command](/docs/reference/commands#create-account-groups) before running the group migration workflow.