Update OBA usage example and publication

This commit intends to
1. Update an example term from the Ontology of Biological Attributes that is used by the NHGRI-EBI GWAS Catalog.
2. Update the publication referencing the NHGRI-EBI GWAS Catalog.

Author: rays22

ontology/oba.md

@@ -27,11 +27,11 @@ tracker: https://github.com/obophenotype/bio-attribute-ontology/issues
 usages:
 - description: OBA terms are used by the NHGRI-EBI GWAS Catalog for phenotypic trait annotation.
   examples:
-  - description: age of onset of depressive disorder
-    url: https://www.ebi.ac.uk/gwas/efotraits/OBA_2040166
+  - description: hip circumference
+    url: https://www.ebi.ac.uk/gwas/efotraits/OBA_1000032
   publications:
-  - id: https://doi.org/10.1093/nar/gkac1010
-    title: 'The NHGRI-EBI GWAS Catalog: knowledgebase and deposition resource'
+  - id: https://doi.org/10.1093/nar/gkae1070
+    title: 'The NHGRI-EBI GWAS Catalog: standards for reusability, sustainability and diversity'
   type: annotation
   user: https://www.ebi.ac.uk/gwas/
 - description: OBA trait terms facilitate computational drug target identification via the Open Targets Platform.