docs: Update meta content - API and clients (#5281)

* docs: Update meta content - API and clients

* docs: Update titles

* Apply batch suggestions from code review

Co-authored-by: Robin Beck <stellarsquall@users.noreply.github.com>

---------

Co-authored-by: Robin Beck <stellarsquall@users.noreply.github.com>

website/content/docs/api-clients/api/index.mdx

@@ -1,8 +1,8 @@
 ---
 layout: docs
-page_title: API
-description: |-
-  Boundary's HTTP API standards
+page_title: API overview
+description: >-
+  Learn about Boundary's HTTP API standards, status codes, path layout, methods, and headers. Understand how rate limiting helps manage system resources.
 ---
 
 # API

website/content/docs/api-clients/api/pagination.mdx

@@ -1,7 +1,8 @@
 ---
 layout: docs
 page_title: API list pagination
-description: Learn how the API pagination and cache works in Boundary to prevent system resources from being overwhlemed and to help you find resources.
+description: >-
+  Learn about API pagination and how the cache works in Boundary to prevent system resources from being overwhelmed and to help you find resources.
 ---
 
 # API list pagination

website/content/docs/api-clients/api/rate-limiting.mdx

@@ -1,7 +1,8 @@
 ---
 layout: docs
 page_title: API rate limiting
-description: Learn how API rate limiting lets you configure limits on the rates of API requests in Boundary to help manage resources and prevent them from being overwhelmed.
+description: >-
+  Learn how API rate limiting lets you configure limits on the rates of API requests in Boundary to help manage resources and prevent them from being overwhelmed.
 ---
 
 # Rate limiting

website/content/docs/api-clients/client-agent.mdx

@@ -1,7 +1,7 @@
 ---
 layout: docs
-page_title: Client Agent
-description: |-
+page_title: Client Agent overview
+description: >-
   Learn how the Boundary Client Agent intercepts DNS requests as the primary resolver on the system, allowing Boundary to proxy connections transparently.
 ---
 

website/content/docs/api-clients/client-cache.mdx

@@ -1,8 +1,8 @@
 ---
 layout: docs
-page_title: Client cache
-description: |-
-  Learn how the client cache enables Boundary to quickly retrieve local information about session and target resources.
+page_title: Client cache overview
+description: >-
+  Learn how the client cache enables Boundary to quickly retrieve local information about session and target resources. Manage startup and other cache functions.
 ---
 
 # Client cache

website/content/docs/api-clients/desktop.mdx

@@ -1,8 +1,8 @@
 ---
 layout: docs
-page_title: Boundary Desktop
-description: |-
-  Get up and running with Boundary Desktop
+page_title: Boundary Desktop overview
+description: >-
+  Learn how to install the Boundary Desktop application to browse and connect to targets.
 ---
 
 # Boundary Desktop

website/content/docs/api-clients/go-sdk.mdx

@@ -1,8 +1,8 @@
 ---
 layout: docs
-page_title: Go SDK
-description: |-
-  Boundary's Go SDK
+page_title: Go SDK overview
+description: >-
+  Learn about Boundary's Go SDK. Use the Go SDK to authenticate to Boundary with an auth method or a recovery KMS workflow.
 ---
 
 # Go SDK

website/content/docs/api-clients/index.mdx

@@ -1,8 +1,8 @@
 ---
 layout: docs
 page_title: API/Clients
-description: |-
-  An introduction to Boundary's API and clients.
+description: >-
+  Discover resources to learn more about Boundary's API and clients.
 ---
 
 # API and clients