Fix release date for v4.5.8

Author: dharmin

README.md

@@ -147,7 +147,7 @@ https://www.youtube.com/watch?v=dJrykKQGDcs
 
 ## Changelog ##
 
-### 4.5.8 [Augest 6, 2019] ###
+### 4.5.8 [August 6, 2019] ###
 
 * FIXED
     * Duplicate media creation when posted from lightbox and activity creation for media comments kept off from settings

readme.txt

@@ -134,7 +134,7 @@ http://www.youtube.com/watch?v=dJrykKQGDcs
 
 == Changelog ==
 
-= 4.5.8 [Augest 6, 2019] =
+= 4.5.8 [August 6, 2019] =
 
 * FIXED