Update README.md

Author: raghavs046

Specialized Areas/Regular Expressions/Img Tag Regex validator/README.md

@@ -1,7 +1,7 @@
 **Regex Pattern**
 1. <img : looks for <img in text 
 2. \w : looks for any word character (equivalent to [a-zA-Z0-9_])
-3. \W looks for any non-word character (equivalent to [^a-zA-Z0-9_])
+3. \W : looks for any non-word character (equivalent to [^a-zA-Z0-9_])
 4. '>' : looks for character >
 
 **How to use**