Link to TP lead job offer + rename to "Job Offer"

_data/navigation.yml

@@ -29,8 +29,8 @@ header:
         - title: Team
           url: "team.html"
 
-        - title: Jobs
-          url: "https://www.helmholtz.de/en/jobs_talent/job_vacancies/"
+        - title: Job Offer
+          url: "https://www.desy.de/career/job_offers/index_eng.html?joboffer=93233"
 
 footer:
          - title: Contact