Remove redundant information

[bagratte]

compose-spec/08-configs.md

Line 56 in 853d1a9

 Compose file need to explicitly grant access to the configs to relevant services in the application. 

is redundant. There's already

compose-spec/08-configs.md

Line 10 in 853d1a9

 Services can only access configs when explicitly granted by a [`configs`](05-services.md#configs) subsection. 

Remove

compose-spec/08-configs.md

Line 56 in 853d1a9

 Compose file need to explicitly grant access to the configs to relevant services in the application.