fix: update task.service.ts references to task-service.ts in documentation

- Changed all occurrences of `task.service.ts` to `task-service.ts` across various documentation files for consistency and accuracy.
- Ensured that the updated references are reflected in both code examples and instructional text.

Author: geromegrignon

src/content/docs/de/api-server/add-http-client.mdx

@@ -45,7 +45,7 @@ The HttpClient is a built-in Angular service that allows you to send HTTP reques
     };
    ```
 
-2. Inject the HttpClient service in the `src/app/task.service.ts` file.
+2. Inject the HttpClient service in the `src/app/task-service.ts` file.
 
    ```typescript ins={"Import the HttpClient service": 2-3} ins="inject" ins={"Inject the HttpClient service": 9-11}
    import { Injectable, inject } from "@angular/core";

src/content/docs/de/api-server/create-task.mdx

@@ -47,7 +47,7 @@ This new **addTask** function defines the exchange with the API server:
 
 <Steps>
 
-1. Update the `src/app/task.service.ts` file.
+1. Update the `src/app/task-service.ts` file.
 
    ```typescript ins={"Replace the addTask function": 10-16}
    import { Injectable, inject } from "@angular/core";

src/content/docs/de/api-server/delete-task.mdx

@@ -32,7 +32,7 @@ deleteTask(id: string) {
 
 <Steps>
 
-1. Update the **task.service.ts** file.
+1. Update the **task-service.ts** file.
 
    ```typescript ins={"Add the deleteTask function": 10-16}
    import { Injectable, inject } from "@angular/core";
@@ -65,7 +65,7 @@ This would result in the following code:
 
    ```typescript ins={"Modify the deleteTask function": 13-18}
    import { Component } from "@angular/core";
-   import { TaskService } from "../task.service";
+   import { TaskService } from "../task-service";
 
    @Component({
      selector: "app-task-list",

src/content/docs/de/api-server/retrieve-tasks.mdx

@@ -51,7 +51,7 @@ This new **getTasks** method defines the communication with the API server:
 
 <Steps>
 
-1. Update the file `src/app/task.service.ts`.
+1. Update the file `src/app/task-service.ts`.
 
    ```typescript ins={"Add the getTasks function": 24-27}
    import { Injectable, signal, WritableSignal } from "@angular/core";
@@ -111,7 +111,7 @@ To differentiate an observable value, the Angular community commonly uses the `$
 
    ```typescript del={"Remove the tasks variable": 11-12} ins={"Replace it with the tasks$ variable": 13-14}
    import { Component } from "@angular/core";
-   import { TaskService } from "../task.service";
+   import { TaskService } from "../task-service";
    import { Task } from "../task.model";
 
    @Component({
@@ -188,7 +188,7 @@ This subscription will be used in the **ngOnInit** function of the **TaskListCom
 
    ```typescript ins={"Subscribe to the observable": 14-17}
    import { Component, OnInit } from "@angular/core";
-   import { TaskService } from "../task.service";
+   import { TaskService } from "../task-service";
    import { Task } from "../task.model";
 
    @Component({

src/content/docs/de/api-server/update-task.mdx

@@ -45,7 +45,7 @@ updateTask(task: Partial<Task>, id: string) {
 
 <Steps>
 
-1. Update the **task.service.ts** file.
+1. Update the **task-service.ts** file.
 
    ```typescript ins={"Replace the getTask function": 10-13} ins={"Replace the updateTask function": 14-17}
    import { Injectable, inject } from "@angular/core";

src/content/docs/de/create-task/angular-service.mdx

@@ -75,7 +75,7 @@ The `ng generate` command that you used for components can also be used to gener
 2. Open the `task-service.ts` file and add a Signal property to store the task list, and add following imports:
 
    ```typescript ins="uuid()" ins="WritableSignal" ins="signal" ins={"Import the task interface and the Signals related imports": 3-4} ins={"import uuid (id generator)": 6-7} ins={"Add the tasks variable": 14-28}
-   // task.service.ts
+   // task-service.ts
    import { Injectable, WritableSignal, signal } from "@angular/core";
 
    import { Task } from "./models/task.model";

src/content/docs/de/create-task/dependency-injection.mdx

@@ -100,7 +100,7 @@ tasks = this.taskService.tasks;
 // task-list.ts
 import { Component } from "@angular/core";
 
-import { TaskService } from "../task.service";
+import { TaskService } from "../task-service";
 
 @Component({
   selector: "app-task-list",

src/content/docs/de/delete-task/add-delete-function.mdx

@@ -24,7 +24,7 @@ This function will remove the task from the list based on its **id**.
 
 <Steps>
 
-1. Update the file `src/app/task.service.ts`.
+1. Update the file `src/app/task-service.ts`.
 
    ```typescript ins={"Adding the deleteTask function": 21-26}
    import { Injectable, inject } from "@angular/core";

src/content/docs/de/reusable-components/delete-all-tasks.mdx

@@ -17,7 +17,7 @@ import NotificationCard from "../../../../components/ui/NotificationCard";
 1. Update the `TaskService` class with a new function setting the tasks to an empty array:
 
     ```typescript ins={"Add the deleteAllTasks function to the service": 3-6}
-    // task.service.ts
+    // task-service.ts
 
 
     deleteAllTasks() {

src/content/docs/en/api-server/add-http-client.mdx

@@ -45,7 +45,7 @@ The HttpClient is a built-in Angular service that allows you to send HTTP reques
     };
    ```
 
-2. Inject the HttpClient service in the `src/app/task.service.ts` file.
+2. Inject the HttpClient service in the `src/app/task-service.ts` file.
 
    ```typescript ins={"Import the HttpClient service": 2-3} ins="inject" ins={"Inject the HttpClient service": 9-11}
    import { Injectable, inject } from "@angular/core";