fix typo in alt

Author: SaicharanKandukuri

README.md

@@ -7,7 +7,7 @@ coverY: 0
 
 # 🐧 udroid
 
-![an rendered image showing udroid ubuntu mate desktop environment running on smartphone ](<.gitbook/assets/banner (1).jpg>)
+![a rendered image showing udroid ubuntu mate desktop environment running on smartphone ](<.gitbook/assets/banner (1).jpg>)
 
 ### Ubuntu-21.04 on android