Update config.md

Signed-off-by: Eric Gregory <eric@cosmonic.com>

Author: ericgregory

docs/reference/config.md

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-You can think of `wasmcloud.toml` as the `package.json` or `Cargo.toml` of the wasmCloud ecosystem. It's the main config file for any of your wasmCloud projects. 
+`wasmcloud.toml` is the main configuration file for a wasmCloud project, analogous to a `package.json` or `Cargo.toml` file. 
 
 Let's look at an example: