Update README.md

BharathVishal · web-flow · commit 10a69af59dbe · 2023-02-21T18:15:32.000+05:30
diff --git a/README.md b/README.md
@@ -80,7 +80,7 @@ TextReaderModule().setFileUri(uri).launchTextViewer()
 
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 ### Preview : 
-![Preview](https://github.com/BharathVishal/TextFileViewerAndroid/blob/master/PreviewGif/PreviewGif.gif)
+![Preview](https://github.com/BharathVishal/TextFileViewerAndroid/blob/main/PreviewGif/PreviewGif.gif)
 
 
 &nbsp;
