fixed link issues

Author: bennobuilder

docs/packages/core/features/collection/Introduction.md

@@ -14,7 +14,7 @@ WIP docs!
 A Collection holds a set of Information that we need to remember at a later point in time.
 It is designed for arrays of data objects following the same structure.
 Be aware that each collected Data needs an **unique primaryKey** to properly identify it later.
-We instantiate a Collection with help of an [Agile Instance](../packages/core/features/agile-instance) here called `App`.
+We instantiate a Collection with help of an [Agile Instance](../agile-instance/Introduction.md) here called `App`.
 By doing this the Collection gets automatically bound to the Agile Instance it was created from.
 ```ts
 const MY_COLLECTION = App.createCollection();
@@ -49,7 +49,7 @@ const myItem = MY_COLLECTION.getItem(1);
 myItem.patch({name: "frank"}); // Update property 'name' in Item
 ```
 
-## 👨‍👧‍👦 [Group](../group/Introduction.md)
+## 👨‍👧‍👦 [Group](./group/Introduction.md)
 
 Often applications need to categorize and preserve ordering of structured data and
 in AgileTs Groups are the cleanest way to reach this goal. They allow us to
@@ -83,7 +83,7 @@ To get the right value to the primary Keys just use `output` property.
 MY_GROUP.output; // Returns '[{ id: 8, name: 'jeff' }, ...]'
 ```
 
-## 🔮 [Selector](../selector/Introduction.md)
+## 🔮 [Selector](./selector/Introduction.md)
 
 Selectors allow us to _select_ an Item from a Collection. 
 We might use the Selector, if we want to select a 'current User' from our User Collection or

docs/packages/core/features/state/Introduction.md

@@ -13,7 +13,7 @@ WIP docs!
 
 A State holds an Information that we need to remember at a later point in time.
 It is the foundation of AgileTs, nearly everything is based or depends on the functionality of States.
-We instantiate a State with help of an [Agile Instance](../packages/core/features/agile-instance) here called `App`.
+We instantiate a State with help of an [Agile Instance](../agile-instance/Introduction.md) here called `App`.
 By doing this the State gets automatically bound to the Agile Instance it was created from.
 ```ts
 const MY_STATE = App.createState("Hello World");

docs/quick_start/React.md

@@ -19,7 +19,9 @@ integrate AgileTs into React, the `react` package.
 npm install @agile-ts/core 
 ```
 
-Let's start with the `core` package, which acts as the brain of AgileTs and manages all our [States](../packages/core/features/state/Introduction.md), [Collections](../packages/core/features/collection/Introduction.md), ..
+Let's start with the `core` package, which acts as the brain of AgileTs 
+and manages all our [States](../packages/core/features/state/Introduction.md), 
+[Collections](../packages/core/features/collection/Introduction.md), ..
 
 ### 📂 `@agile-ts/react`
 
@@ -67,7 +69,7 @@ If you have chosen this way there is no need to follow the installation steps ab
 
 ### ❓ What is a State
 A State holds an Information that you need to remember at a later point in time.
-It gets created with help of an [Agile Instance](../packages/core/features/agile-instance) here called `App`.
+It gets created with help of an [Agile Instance](../packages/core/features/agile-instance/Introduction.md) here called `App`.
 ```ts
 const MY_FIRST_STATE = App.createState("Hello World");
 ```
@@ -157,7 +159,7 @@ in which we just pass our desired new value.
 
 ### ❓ What is a Collection
 A Collection is like an array of object shaped data following the same pattern.
-It gets created with help of an [Agile Instance](../packages/core/features/agile-instance) here called `App`.
+It gets created with help of an [Agile Instance](../packages/core/features/agile-instance/Introduction.md) here called `App`.
 ```ts
 const MY_COLLECTION = App.createCollection();
 ```