Fixed bad url in array and structures page (#354)

* Fixed bad url in array and structures page: the URL to JSON Loader was leading to a 404 page due to wrong redirection.
* Fixed spelling issues

Author: AnseloOriginal

docs/gdevelop5/all-features/variables/structures-and-arrays/index.md

@@ -22,7 +22,7 @@ You can use this data type to organize related variables within a single variabl
 
     In programming languages, this data type is often referred to as an _object_, _map_, _hash_, or *dictionary*.
 
-Structures can be created in the Variables Editor, using events or by using an extension like [JSON resource loader](../../extensions/jsonresource-loader/).
+Structures can be created in the Variables Editor, using events or by using an extension like [JSON resource loader](../../../extensions/jsonresource-loader/).
 
 ![](structure-variable.png)
 
@@ -33,7 +33,7 @@ An Array variable, also sometimes called _list_ in programming languages, is lik
 Each variable in an Array has an index, which defines their position in the array.
 The indices begin at 0 and go up to however long the array is.
 
-Arrays can be created in the Variables Editor, using events or by using an extension like [JSON resource loader](../../extensions/jsonresource-loader/).
+Arrays can be created in the Variables Editor, using events or by using an extension like [JSON resource loader](../../../extensions/jsonresource-loader/).
 
 ![](array-variable.png)
 

docs/gdevelop5/events/js-code/javascript-in-extensions/index.md

@@ -7,7 +7,7 @@ title: Use JavaScript in extensions
 
 After [creating a new extension](/gdevelop5/extensions/create/), you need to define an action with a [JS event](/gdevelop5/events/js-code/) to declare the library code.
 
-In order to get the library code, you can copy the content of a bundled library for instance a UMD one. You can usually find bundled libraries in the **node_modules** folder of a JS project after the installation of the library with a packet manager.
+In order to get the library code, you can copy the content of a bundled library for instance a UMD one. You can usually find bundled libraries in the **node_modules** folder of a JS project after the installation of the library with a package manager.
 
 Bundled libraries have some extra code at the beginning and the end of the file to bundle the library. This code is not needed. Instead, the classes are added to the `gdjs` namespace like in the following code: