Remove sidebar position from firma carta manifiesto

Removed sidebar position metadata from carta manifiesto document.

Author: edgtz

website/i18n/en/docusaurus-plugin-content-docs-stripe-docs/current/04-organizacion-emisora/firma-carta-manifiesto.md

@@ -1,6 +1,3 @@
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-sidebar_position: 999
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 # Carta Manifiesto Signature (SAT Requirement)
 
 Under `Settings > Sign Carta Manifiesto`, [sign the letter](https://dashboard.facturapi.io/settings/manifiesto) to comply with the current RMF regulations.