chore: update jsdoc

lib/health-check/health-check.error.ts

@@ -1,7 +1,9 @@
 /**
  * @deprecated
- * This class has been deprecated and will be removed in the next major release.
+ * **This class has been deprecated and will be removed in the next major release.**
  * Instead utilise the `HealthIndicatorService` to indicate the health of your health indicator.
+ *
+ * @see {@link https://docs.nestjs.com/migration-guide#terminus-module|Migration Guide}
  */
 export class HealthCheckError extends Error {
   causes: any;

lib/health-indicator/health-indicator.service.ts

@@ -7,18 +7,23 @@ import { type HealthIndicatorResult } from './health-indicator-result.interface'
  */
 @Injectable()
 export class HealthIndicatorService {
-  check<Key extends string>(key: Key) {
+  check<const Key extends string>(key: Key) {
     return new HealthIndicatorSession(key);
   }
 }
 
 type AdditionalData = Record<string, unknown>;
 
+/**
+ * Indicate the health of a health indicator with the given key
+ *
+ * @publicApi
+ */
 export class HealthIndicatorSession<Key extends Readonly<string> = string> {
   constructor(private readonly key: Key) {}
 
   /**
-   * Mark the health indicator as down
+   * Mark the health indicator as `down`
    * @param data additional data which will get appended to the result object
    */
   down<T extends AdditionalData>(
@@ -49,6 +54,10 @@ export class HealthIndicatorSession<Key extends Readonly<string> = string> {
     } as Record<Key, typeof detail>;
   }
 
+  /**
+   * Mark the health indicator as `up`
+   * @param data additional data which will get appended to the result object
+   */
   up<T extends AdditionalData>(data?: T): HealthIndicatorResult<Key, 'up', T>;
   up<T extends string>(
     data?: T,

lib/health-indicator/health-indicator.ts

@@ -10,13 +10,20 @@ export type HealthIndicatorFunction = () =>
   | HealthIndicatorResult;
 
 /**
+ * @deprecated
+ * **This class has been deprecated and will be removed in the next major release.**
+ * Instead utilise the `HealthIndicatorService` to indicate the health of your health indicator.
+ *
+ * @see {@link https://docs.nestjs.com/migration-guide#terminus-module|Migration Guide}
+ *
+ * @description
  * Represents an abstract health indicator
  * with common functionalities
  *
  * A custom HealthIndicator should inherit the `HealthIndicator` class.
  *
+ * @example
  * ```typescript
- *
  * class MyHealthIndicator extends HealthIndicator {
  *   public check(key: string) {
  *     // Replace with the actual check
@@ -26,11 +33,7 @@ export type HealthIndicatorFunction = () =>
  *   }
  * }
  * ```
- *
  * @publicApi
- * @deprecated
- * This class has been deprecated and will be removed in the next major release.
- * Instead utilise the `HealthIndicatorService` to indicate the health of your health indicator.
  */
 export abstract class HealthIndicator {
   /**