Add more example code.

Editor assessment

The subject says more example code was added to the wasm manual, which is honest but generic: how many examples, covering which APIs, and replacing what is unstated. Type docs and the manual/wasm scope are accurate. The trailing period is a small punctuation lapse. No body enumerates the additions, which a list of two or three covered topics would have fixed cheaply. No footers. Understandable in intent, thin in substance.