Fix error message

Author: jespino

go/analysis/passes/initflagparse/initflagparse.go

@@ -60,7 +60,7 @@ func checkForFlagParse(pass *analysis.Pass, x ast.Node) {
 }
 
 if ok && module.Name == "flag" && fun.Sel.Name == "Parse" {
-pass.ReportRangef(x, "flag.Parse usage during module initialization")
+pass.ReportRangef(x, "flag.Parse during package initialization")
 return false
 }
 return true