update README.md and add demo images

Author: QiuJueqin

README.md

@@ -67,38 +67,46 @@ and one yaml for one camera.
 
 # Demo
 
-<p align="center"><img src="assets/dpc.jpg" alt="img" align="right" width="600px"></a></p>
+<p align="center"><img src="assets/dpc.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Bayer Input</p>
 
-<p align="center"><img src="assets/cfa.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/cfa.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">CFA Interpolation</p>
 
-<p align="center"><img src="assets/ccm.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/ccm.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Color Correction</p>
 
-<p align="center"><img src="assets/gca.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/gca.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Gamma Correction</p>
 
-<p align="center"><img src="assets/bnf.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/bnf.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Non-local Means & Bilateral Filter</p>
 
-<p align="center"><img src="assets/eeh.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/eeh.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Edge Enhancement</p>
 
-<p align="center"><img src="assets/hsc.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/hsc.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Hue & Saturation Control</p>
 
-<p align="center"><img src="assets/bcc.jpg" alt="img" align="right" width="600px"></a></p>
+
+<p align="center"><img src="assets/bcc.jpg" alt="img" align="right" width="600px"></p>
 
 <p align="center">Brightness & Contrast Control</p>
 
+
 # License
 
 Copyright 2021 Qiu Jueqin.