[DOCS] Fix snapshot repo API jump list

docs/reference/snapshot-restore/apis/snapshot-restore-apis.asciidoc

@@ -18,6 +18,7 @@ content may not be included yet.
 
 * <<clean-up-snapshot-repo-api,Clean up snapshot repository>>
 * <<delete-snapshot-repo-api,Delete snapshot repository>>
+* <<get-snapshot-repo-api,Get snapshot repository>>
 * <<put-snapshot-repo-api,Put snapshot repository>>