chore(AIP-2718): fix formatting issue (#1407)

Author: bshaffer

aip/apps/2718.md

@@ -46,7 +46,7 @@ with One Platform or not.
 For compliant references, you **should** avoid the use of the terms "reference"
 and "name" in the field name. That is, `koala` is preferred to
 `koala_reference` or `koala_name`
-([see AIP-122](../0122.md#fields-representing-another-resource)).
+(see [AIP-122][]).
 
 For other target APIs, you **should** echo that API's terminology in the name
 for clarity. For example, if the target API's `GetKoalaDataRequest` has a