fixed > 100 typos introduced by me :-)

framework/requirements/views/web/index.php

@@ -27,7 +27,7 @@
 		</p>
 		<p>
 		There are two kinds of requirements being checked. Mandatory requirements are those that have to be met
-		to allow Yii to work as expected. There are also some optional requirements beeing checked which will
+		to allow Yii to work as expected. There are also some optional requirements being checked which will
 		show you a warning when they do not meet. You can use Yii framework without them but some specific
 		functionality may be not available in this case.
 		</p>