chore: point documentation to README

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

appinfo/info.xml

@@ -28,7 +28,7 @@ Developed with ❤️ by [LibreCode](https://librecode.coop). Help us transform
 	<author mail="contact@librecode.coop" homepage="https://librecode.coop">LibreCode</author>
 	<namespace>ProfileFields</namespace>
 	<documentation>
-		<developer>https://github.com/LibreCodeCoop/profile_fields/blob/main/openapi-full.json</developer>
+		<developer>https://github.com/LibreCodeCoop/profile_fields/</developer>
 	</documentation>
 	<category>organization</category>
 	<category>tools</category>