Update inter-canister-calls.mdx to reference message execution proper…

[roelstorms]

The properties used to be documented on this page. They moved to another page. The references were inaccurate.

Thank you for your contribution to the IC Developer Portal. This repo contains the content for https://internetcomputer.org and the ICP Developer Documentation, https://internetcomputer.org/docs/.

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• Follows the developer docs style guide.
• Follows the best practices and guidelines.
• New documentation pages include document tags.
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• Make sure that the .github/CODEOWNERS file is
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[robin-kunzler]

Thanks a lot @roelstorms for fixing this!