Update CHANGELOG.md

CHANGELOG.md

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 ## 0.5.2
 #### Bugfixes
-* Increased delay to fixed QRView opening zoomed in on some devices by adding small delay to updateDimensions(). (#250)
+* Increased delay to fix QRView opening zoomed in on some devices by adding small delay to updateDimensions(). (#250)
 
 ## 0.5.1
 Removed web from library export.