Fixed type, fixed syntax on htmlImg const, changed prefix in base64text const to be consistent

Author: Leon-Sam

README.md

@@ -253,15 +253,15 @@ cv.imshow('a window name', mat);
 cv.waitKey();
 
 // load base64 encoded image
-const base64text='data:image/gif;base64,R0lGO..';//Base64 encoded string
+const base64text='data:image/png;base64,R0lGO..';//Base64 encoded string
 const base64data =base64text.replace('data:image/jpeg;base64','')
                             .replace('data:image/png;base64','');//Strip image type prefix
 const buffer = Buffer.from(base64data,'base64');
 const image = cv.imdecode(buffer); //Image is now represented as Mat
 
-// convert Mat to base4 encoded jpg image
+// convert Mat to base64 encoded jpg image
 const outBase64 =  cv.imencode('.jpg', croppedImage).toString('base64'); // Perform base64 encoding
-const htmlImg='<img src='data:image/jpeg;base64,"+outBase64 + "'>'; //Create insert into HTML compatible <img> tag
+const htmlImg='<img src=data:image/jpeg;base64,'+outBase64 + '>'; //Create insert into HTML compatible <img> tag
 
 // open capture from webcam
 const devicePort = 0;