docs: update curl commands to use the default port when app is deployed

[dorser]

Feature or Problem

wash dev start the application with port 8000. However, when deploying the app with wash app deploy it'll take the port from wadm.yaml which is set to 8080 by default. This commit makes sure the curl commands in the documentation uses the default port in wadm.yaml

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[dorser]

Speaking with Joonas, we might want to change the examples to use 8000 (the default wash dev port) instead of the documentation.

Creating another PR.

[thomastaylor312]

Ok, I'll hold off on merging this then

[joonas]

After some in-person conversation, we decided that https://github.com/wasmCloud/wasmCloud/pull/3611 would be the better way to go on this one, so if you're good with it @dorser, I think we should close this out in favor of merging https://github.com/wasmCloud/wasmCloud/pull/3611 instead.

[dorser]

💯