docs: update source line number in AdministratorService documentation

Author: vendure-ci-automation-bot[bot]

docs/docs/reference/typescript-api/services/administrator-service.mdx

@@ -2,7 +2,7 @@
 title: "AdministratorService"
 generated: true
 ---
-<GenerationInfo sourceFile="packages/core/src/service/services/administrator.service.ts" sourceLine="52" packageName="@vendure/core" />
+<GenerationInfo sourceFile="packages/core/src/service/services/administrator.service.ts" sourceLine="53" packageName="@vendure/core" />
 
 Contains methods relating to [Administrator](/reference/typescript-api/entities/administrator#administrator) entities.