Update readme with correct aria_s1_gunw example job

README.md

@@ -66,7 +66,7 @@ rtc_job = hyp3.submit_rtc_job('granule_id', 'job_name')
 insar_job = hyp3.submit_insar_job('reference_granule_id', 'secondary_granule_id', 'job_name')
 insar_burst_job = hyp3.submit_insar_isce_burst_job('reference_granule_id', 'secondary_granule_id', 'job_name')
 autorift_job = hyp3.submit_autorift_job('reference_granule_id', 'secondary_granule_id', 'job_name')
-aria_s1_gunw_job = hyp3.submit_aria_s1_gunw_job('reference_granule_id', 'secondary_granule_id', 'frame_id', 'job_name')
+aria_s1_gunw_job = hyp3.submit_aria_s1_gunw_job(['ref_id_1', 'ref_id_2', ['sec_id_1', 'sec_id_2'], 'frame_id', 'job_name')
 ```
 Each of these functions will return an instance of the `Job` class that represents a new HyP3 job request.