Update part0b.md

Author: sujandhakal0

src/content/0/en/part0b.md

@@ -682,14 +682,14 @@ sequenceDiagram
     server-->>browser: the JavaScript file
     deactivate server
 
-    Note right of browser: The browser starts executing the JavaScript code that fetches the JSON from the server
+    Note right of the browser: The browser starts executing the JavaScript code that fetches the JSON from the server
 
     browser->>server: GET https://studies.cs.helsinki.fi/exampleapp/data.json
     activate server
     server-->>browser: [{ "content": "HTML is easy", "date": "2023-1-1" }, ... ]
     deactivate server
 
-    Note right of browser: The browser executes the callback function that renders the notes
+    Note right of the browser: The browser executes the callback function that renders the notes
 ```
 
 **Create a similar diagram** depicting the situation where the user creates a new note on the page <https://studies.cs.helsinki.fi/exampleapp/notes> by writing something into the text field and clicking the <i>submit</i> button.
@@ -699,7 +699,7 @@ If necessary, show operations on the browser or on the server as comments on the
 The diagram does not have to be a sequence diagram. Any sensible way of presenting the events is fine.
 
 All necessary information for doing this, and the next two exercises, can be found in the text of [this part](/en/part0/fundamentals_of_web_apps#forms-and-http-post).
-The idea of these exercises is to read the text through once more and to think through what is going on there. Reading the application [code](https://github.com/mluukkai/example_app) is not necessary, but it is of course possible.
+The idea of these exercises is to read the text once more and to think through what is going on there. Reading the application [code](https://github.com/mluukkai/example_app) is not necessary, but it is of course possible.
 
 You can do the diagrams with any program, but perhaps the easiest and the best way to do diagrams is the [Mermaid](https://github.com/mermaid-js/mermaid#sequence-diagram-docs---live-editor) syntax that is now implemented in [GitHub](https://github.blog/2022-02-14-include-diagrams-markdown-files-mermaid/) Markdown pages!