Update user_retention.md (#31097)

* Update user_retention.md

Consulted w/Maxime M who prefers that this be titled "Retention Analysis" to align w/the formal name of the feature.

* Rename file; update links and TOC

* Fix link

---------

Co-authored-by: Janine Chan <[email protected]>

Author: davidmlentz

config/_default/menus/main.en.yaml

@@ -7664,8 +7664,8 @@ menu:
       parent: pa_charts
       identifier: pa_funnel_analysis
       weight: 102
-    - name: User Retention
-      url: product_analytics/charts/user_retention
+    - name: Retention Analysis
+      url: product_analytics/charts/retention_analysis
       parent: pa_charts
       identifier: pa_user_retention
       weight: 103

content/en/dashboards/widgets/retention.md

@@ -2,9 +2,9 @@
 title: Retention Widget
 widget_type: cohort
 further_reading:
-- link: "product_analytics/user_retention/"
+- link: "product_analytics/charts/retention_analysis/"
   tag: "Documentation"
-  text: "Product Analytics User Retention"
+  text: "Retention Analysis"
 - link: "https://www.datadoghq.com/blog/user-engagement-retention-analysis/"
   tag: "Blog"
   text: "Measure long-term user engagement with Datadog Retention Analysis"
@@ -31,7 +31,7 @@ Retention Analysis allows you to measure how often users are successfully return
 
 ## Setup
 
-To populate User Retention data, you must set the `usr.id` attribute in your SDK. [See the instructions for sending unique user attributes][1].
+To populate user retention data, you must set the `usr.id` attribute in your SDK. [See the instructions for sending unique user attributes][1].
 
 ### Configuration
 

content/en/product_analytics/_index.md

@@ -98,7 +98,7 @@ Suppose you want to make changes to your application interface but want to first
 {{< partial name="whats-next/whats-next.html" >}}
 
 [1]: /data_security/data_retention_periods/
-[2]: /product_analytics/charts/user_retention
+[2]: /product_analytics/charts/retention_analysis
 [3]: https://app.datadoghq.com/product-analytics
 [4]: /product_analytics/charts/funnel_analysis
 [5]: /product_analytics/charts/pathways

content/en/product_analytics/charts/_index.md

@@ -47,6 +47,6 @@ The [Analytics Explorer][1] contains views data aggregation to help you understa
 [1]: /product_analytics/charts/analytics_explorer/
 [2]: /product_analytics/charts/funnel_analysis
 [3]: /product_analytics/charts/pathways
-[4]: /product_analytics/charts/user_retention
+[4]: /product_analytics/charts/retention_analysis
 
 

content/en/product_analytics/charts/user_retention.md renamed to content/en/product_analytics/charts/retention_analysis.md

@@ -1,7 +1,8 @@
 ---
-title: User Retention
+title: Retention Analysis
 aliases:
 - /product_analytics/user_retention/
+- /product_analytics/charts/user_retention/
 description: Measure user retention to understand overall user satisfaction with your application.
 further_reading:
     - link: '/product_analytics/'
@@ -21,7 +22,7 @@ Only views and actions can act as events.
 
 ## Prerequisites
 
-In order for User Retention data to populate, you must set the `usr.id` attribute in your SDK. See the [instructions for sending unique user attributes][4].
+In order for user retention data to populate, you must set the `usr.id` attribute in your SDK. See the [instructions for sending unique user attributes][4].
 
 ## Retention types
 Product analytics support two types of retention event measurements: