fix: add some detail for manual approach situations

Author: vados-cosmonic

component-model/src/language-support/c.md

@@ -68,7 +68,8 @@ Given that `wasi-sdk` has ben installed, we can build a Preview 2 component quic
 
 After this command completes, you will have a new file named `adder.wasm` available in the source folder.
 
-For details on a more manual approach , see the following instructions:
+For use cases that require building a P1 module and/or adapting an existing P1 module into a P2 module,
+such as buliding for a platform that does not support P2, details on a more manual approach can be found below:
 
 <details>
 <summary>Manual P1 & P2 build using `wasi-sdk`'s `clang` and `wasm-tools`</summary>