[doc] Update default example

Author: SamuelHassine

docs/client_usage/getting_started.rst

@@ -36,7 +36,7 @@ and OpenCTI compatible date format.
         name="C2 server of the new campaign",
         description="This is the C2 server of the campaign",
         pattern_type="stix",
-        indicator_pattern="[domain-name:value = 'www.5z8.info']",
+        pattern="[domain-name:value = 'www.5z8.info']",
         x_opencti_main_observable_type="IPv4-Addr",
         valid_from=date,
         update=True,