Incorporate review comments by @Alexander_Hoose

.editorconfig

docs/account.md

docs/apis/application-metadata.mdx

docs/apis/routing.mdx

docs/getting-started/authentication.mdx

docs/getting-started/encryption.md

docs/getting-started/overview.md

docs/getting-started/receiving/decrypt.mdx

docs/getting-started/receiving/destination.mdx

docs/getting-started/receiving/download-submission.mdx

docs/getting-started/receiving/overview.mdx

docs/getting-started/receiving/process-and-acknowledge.mdx

docs/getting-started/receiving/query.mdx

docs/getting-started/receiving/validate.mdx

docs/getting-started/sending/attachments.mdx

docs/getting-started/sending/encrypt.mdx

docs/getting-started/sending/metadata.mdx

docs/getting-started/sending/overview.mdx

docs/getting-started/sending/query-status.mdx

docs/getting-started/sending/submit.mdx