Update part0b.md

tested syntax with https://mermaid.live/edit#pako:eNq9VE2T0zAM_Ssen9M0H01Dc9gTDAzDLof2BNmD11Ea08QOtlJaOv3vKHGmB_bCwg45WU_yk_wi6cKlqYAX3MH3AbSEt0rsrehKzejrhUUlVS80sidrfjiwzx0EHkfce-awxd2dxwv2_t2ONYi9K5ZLh0OlwIXShQ20TumDCmu1hJPo-hZE3y-1QXCeSkhUR4FwyzCC_rwg_jlTwT7s7j-xysihA40-qoJnl1-nvE4oTe4XVogNMLrEatXC_yjw21_U91EcxVZa1eOflPlAv4lZtW-QmZrdiHZENBvMITWJY3ACOaDS-9-zjI1HmKB8gLIB5wO2nx9YbU03Wa-rTSVQkDZGv0ydrxdW0phoHNuLF2RMHafobcKdSx4QQtTgfUmUpIt4EZecXQMWhiF7_HctvYizRFK07ZOQB1YPmhiN9ipa0BVYHzJNEQ94B5YaoqL5voy5Sk7Obi60EvZQ8lJfKU4MaLZnLXlRi9ZBwId-fNG8DG4ozfsXY8hGO3iTFxd-4kWWh1mcJOtoleZRHOdJwM-8SOMwjtJ1skpX6Zs8ifJrwH9O96Nwk-VJGq2zOM-iLN1sAg6VQmPv_TqattL1F3wpkj0 and also in  https://mermaid-js.github.io/docs/mermaid-live-editor-beta, both show the correct result only after removing 'the', so I figured must be a  mermaidsyntax issue. Please correct me if I am wrong.

Author: sulavaaa

src/content/0/en/part0b.md

@@ -682,14 +682,14 @@ sequenceDiagram
     server-->>browser: the JavaScript file
     deactivate server
 
-    Note right of the browser: The browser starts executing the JavaScript code that fetches the JSON from the server
+    Note right of 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 the browser: The browser executes the callback function that renders the notes
+    Note right of 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.