fix typos (#576)

Fix typos in English translation.

7-bank-project/2-forms/README.md

@@ -136,7 +136,7 @@ If everything goes well, the server should answer your request with a [JSON](htt
 
 ## Submitting data without reloading the page
 
-As you probably noticed, there's a slight issue with the approach we just used: when submitting the form, we get out of our app and the browser redirects to the server URL. We're trying to avoid all page reloads with our web app, as we're makng a [Single-page application (SPA)](https://en.wikipedia.org/wiki/Single-page_application).
+As you probably noticed, there's a slight issue with the approach we just used: when submitting the form, we get out of our app and the browser redirects to the server URL. We're trying to avoid all page reloads with our web app, as we're making a [Single-page application (SPA)](https://en.wikipedia.org/wiki/Single-page_application).
 
 To send the form data to the server without forcing a page reload, we have to use JavaScript code. Instead of putting an URL in the `action` property of a `<form>` element, you can use any JavaScript code prepended by the `javascript:` string to perform a custom action. Using this also means that you'll have to implement some tasks that were previously done automatically by the browser:
 
@@ -274,7 +274,7 @@ Now if you press the *Register* button and a field does not respect a validation
 
 ![Screenshot showing the validation error when trying to submit the form](./images/validation-error.png)
 
-Validation like this performed *before* sending any data to the server is called **client-side** validation. But note that's it's not always possible to peform all checks without sending the data. For example, we cannot check here if an account already exists with the same username without sending a request to the server. Additional validation performed on the server is called **server-side** validation.
+Validation like this performed *before* sending any data to the server is called **client-side** validation. But note that's it's not always possible to perform all checks without sending the data. For example, we cannot check here if an account already exists with the same username without sending a request to the server. Additional validation performed on the server is called **server-side** validation.
 
 Usually both need to be implemented, and while using client-side validation improves the user experience by providing instant feedback to the user, server-side validation is crucial to make sure the user data you manipulate is sound and safe.
 

7-bank-project/3-data/README.md

@@ -225,7 +225,7 @@ First, we check that we have the account data we need before going further. Then
 
 > To make the balance display prettier, we use the method [`toFixed(2)`](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number/toFixed) to force displaying the value with 2 digits after the decimal point.
 
-Now we need to call our `updateDashboard()` function everytime the dashboard is loaded. If you already finished the [lesson 1 assignment](../1-template-route/assignment.md) this should be straighforward, otherwise you can use the following implementation.
+Now we need to call our `updateDashboard()` function everytime the dashboard is loaded. If you already finished the [lesson 1 assignment](../1-template-route/assignment.md) this should be straightforward, otherwise you can use the following implementation.
 
 Add this code to the end of the `updateRoute()` function:
 

7-bank-project/4-state-management/assignment.md

@@ -16,7 +16,7 @@ Look at the [server API specifications](../api/README.md) to see which API you n
 
 Here's an example result after completing the assignment:
 
-![Screenshot showing an example "Add transation" dialog](./images/dialog.png)
+![Screenshot showing an example "Add transaction" dialog](./images/dialog.png)
 
 ## Rubric