[Docs] Fixed Typo (#615)

Corrected "dynamicall" to "dynamically" in [README.md].

This pull request addresses a minor typo found in the repository. The
typo has been corrected to improve clarity and maintain the quality of
the documentation.

This change is purely cosmetic and does not affect functionality.

README.md

@@ -110,7 +110,7 @@ Thanks to [jsdelivr.com](https://www.jsdelivr.com/package/npm/@mlc-ai/web-llm),
 ```javascript
 import * as webllm from "https://esm.run/@mlc-ai/web-llm";
 ```
-It can also be dynamicall imported as:
+It can also be dynamically imported as:
 ```javascript
 const webllm = await import ("https://esm.run/@mlc-ai/web-llm");
 ```