docs: update security guide link references (#55514)

PR Close #55514

adev/src/content/guide/components/dom-apis.md

@@ -80,4 +80,4 @@ Avoid inserting, removing, and modifying DOM elements. In particular, **never di
 element's `innerHTML` property**, which can make your application vulnerable
 to [cross-site scripting (XSS) exploits](https://developer.mozilla.org/en-US/docs/Glossary/Cross-site_scripting).
 Angular's template bindings, including bindings for `innerHTML`, include safeguards that help
-protect against XSS attacks. See the [Security guide](guide/security) for details.
+protect against XSS attacks. See the [Security guide](best-practices/security) for details.

adev/src/content/guide/templates/overview.md

@@ -26,7 +26,7 @@ However, because an Angular template is part of an overall webpage, and not the
 
 IMPORTANT: To eliminate the risk of script injection attacks, Angular does not support the `<script>` element in templates.
 Angular ignores the `<script>` tag and outputs a warning to the browser console.
-For more information, see the [Security](guide/security) page.
+For more information, see the [Security](best-practices/security) page.
 
 ## More on template syntax
 

adev/src/content/introduction/what-is-angular.md

@@ -94,7 +94,7 @@ more">
   Angular's internationalization features handles message translations and formatting, including
   support for unicode standard ICU syntax.
   </docs-card>
-  <docs-card title="Protect your users with security by default" href="guide/security" link="Security">
+  <docs-card title="Protect your users with security by default" href="best-practices/security" link="Security">
   In collaboration with Google's world-class security engineers, Angular aims to make development
   safe by default. Built-in security features, including HTML sanitization and
   trusted type support, help protect your users from common vulnerabilities like

adev/src/content/reference/roadmap.md

@@ -222,7 +222,7 @@ This section represents explorations and prototyping of potential future project
   <docs-card title="Transition the Angular language service to Ivy" link="Completed Q2 2021" href="tools/language-service">
   The goal of this project is to improve the experience and remove legacy dependency by transitioning the language service to Ivy. Today the language service still uses the View Engine compiler and type checking, even for Ivy apps. We want to use the Ivy template parser and improved type checking for the Angular Language service to match app behavior. This migration is also a step towards unblocking the removal of View Engine, which will simplify Angular, reduce the npm package size, and improve the maintainability of the framework.
   </docs-card>
-  <docs-card title="Increased security with native Trusted Types in Angular" link="Completed Q2 2021" href="guide/security">
+  <docs-card title="Increased security with native Trusted Types in Angular" link="Completed Q2 2021" href="best-practices/security">
   In collaboration with the Google security team, we are adding support for the new Trusted Types API. This web platform API helps developers build more secure web apps.
   </docs-card>
   <docs-card title="Optimized build speed and bundle sizes with Angular CLI webpack 5" link="Completed Q2 2021" href="tools/cli/build">