Update content.rst

Author: linardian

v2.1/docs/reference_manual/operators/Time operators/Time aggregation/content.rst

@@ -26,7 +26,7 @@ Examples of valid syntaxes
   time_agg ( “A”, cast ( “2012Q1”, time_period , ”YYYY\Qq” ) )
   time_agg(“M”, cast (“2012-12-23”, date, “YYYY-MM-DD”) )
   time_agg(“M”, DS1)
-  ds_2 := ds_1[calc Me1 := time_agg(“M”,Me1)]
+  ds_2 := ds_1[calc Me1 := time_agg(“M”)]
 
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 Semantics  for scalar operations