Fixed typo in _typography.less

Author: kalpmehta

lib/web/css/docs/source/_typography.less

@@ -3,7 +3,7 @@
 //  * See COPYING.txt for license details.
 //  */
 
-//  # Typogrphy
+//  # Typography
 //
 //  Magento UI library provides mixins for typography styling. To configure typography, global variables from **_variables.less** file are used.
 //
@@ -978,7 +978,7 @@
 
 //  # Text hide
 //
-//  The <code>.lib-text-hide()</code> mixin hides a text of the element the mixin is applyed to.
+//  The <code>.lib-text-hide()</code> mixin hides a text of the element the mixin is applied to.
 //
 //  ```html
 //  <p class="example-text-hide">