TT#46791 Call proper method 'click()' instead of 'click' (cosmetic)

This is mainly for the code consistency.

Change-Id: I1e820ef3693f541c21b86929c4887d434a74f35f

t/selenium/controller_billing.t

@@ -138,7 +138,7 @@ diag("Find 'Edit' button for element 'Wednesday'");
 my $btn = $d->find_element('//table//td[contains(text(),"Wednesday")]/..//a[text()[contains(.,"Edit")]]');
 ok($btn);
 diag("Click 'Edit' button for element 'Wednesday'");
-$btn->click;
+$btn->click();
 $d->find_text("Edit Wednesday");
 diag("Pop-up 'Edit Wednesday' was properly opened");
 

t/selenium/controller_customer.t

@@ -73,7 +73,7 @@ $d->find_element('//div[contains(@class,"accordion-body")]//table//td[contains(t
 diag("Edit Fraud Limits");
 my $elem = $d->find_element('//div[contains(@class,"accordion-heading")]//a[contains(text(),"Fraud Limits")]');
 $d->scroll_to_element($elem);
-$elem->click;
+$elem->click();
 sleep 4 if ($d->browser_name_in("phantomjs", "chrome")); # time to move
 $row = $d->find_element('//div[contains(@class,"accordion-body")]//table//tr/td[contains(text(),"Monthly Settings")]');
 ok($row);