Fix expectations for already existing content

We were checking content which was already present/absent before making
a certain request, so the expectations were not checking the request had
already finished. Our intention here is to check the page contents after
the request has finished.

spec/system/admin/site_customization/information_texts_spec.rb

@@ -12,7 +12,8 @@ describe "Admin custom information texts", :admin do
     expect(page).to have_content "Help with participatory budgets"
 
     within("#information-texts-tabs") { click_link "Debates" }
-    expect(page).to have_content "Help about debates"
+
+    expect(page).to have_content "Edit debate"
 
     within("#information-texts-tabs") { click_link "Community" }
     expect(page).to have_content "Access the community"

spec/system/admin/translatable_spec.rb

@@ -321,7 +321,7 @@ describe "Admin edit translatable records", :admin do
 
       click_button "Save changes"
 
-      expect(page).not_to have_css "#error_explanation"
+      expect(page).to have_content "Process updated successfully"
 
       visit edit_admin_legislation_process_path(translatable)