Fixing more typos.

plugins/Referrers/Columns/Campaign.php

@@ -18,7 +18,7 @@ use Piwik\Tracker\Visitor;
 class Campaign extends Base
 {
     /**
-     * Obtained from the `[Tracker] tracker_create_new_visit_when_campaign_changes` INI config option.
+     * Obtained from the `[Tracker] create_new_visit_when_campaign_changes` INI config option.
      * If true, will create new visits when campaign name changes.
      *
      * @var bool

plugins/Referrers/Columns/Website.php

@@ -18,7 +18,7 @@ use Piwik\Tracker\Visitor;
 class Website extends Base
 {
     /**
-     * Set using the `[Tracker] tracker_create_new_visit_when_website_referrer_changes` INI config option.
+     * Set using the `[Tracker] create_new_visit_when_website_referrer_changes` INI config option.
      * If true, will force new visits if the referrer website changes.
      *
      * @var bool

tests/PHPUnit/Fixtures/SomeVisitsCustomVariablesCampaignsNotHeuristics.php

@@ -25,7 +25,7 @@ class SomeVisitsCustomVariablesCampaignsNotHeuristics extends Fixture
 
     public function setUp()
     {
-        $this->setPiwikEnviornmentOverrides();
+        $this->setPiwikEnvironmentOverrides();
         $this->setUpWebsitesAndGoals();
         $this->trackVisits();
     }
@@ -34,7 +34,7 @@ class SomeVisitsCustomVariablesCampaignsNotHeuristics extends Fixture
     {
     }
 
-    private function setPiwikEnviornmentOverrides()
+    private function setPiwikEnvironmentOverrides()
     {
         $configOverride = $this->getTestEnvironment()->configOverride;
         $configOverride['Tracker']['create_new_visit_when_website_referrer_changes'] = 1;