Update README.md

README.md

@@ -13,14 +13,23 @@ size_categories:
 - 1K<n<10K
 ---
 
-This image collection was web scrapped from a single site. It comes from the SimpleCaptcha library which uses a variety of formats including this one: outlined alphanumeric characters with a stroke.
+This image collection was web scrapped from a single site. 
+It comes from the **SimpleCaptcha** library, which uses a variety of formats including this one: **outlined alphanumeric characters with a stroke**.
 
-Horizontal Gradient.
-RGB Channels.
-JPG Format.
-5 characters.
-Characters may repeat.
-Numeric and lowercase alphanumeric.
-Alpha: a b c d e f g h k m n p r v w x y (17 unique) Number: 2 3 4 5 6 7 8 9 (8 unique) Total chars = 25 unique characters
+## Image description:
 
-This dataset intends to help improve security on websites. Visit Simple Captcha Library Website.
+- Horizontal Gradient.
+- RGB Channels.
+- JPG Format.
+- 5 characters.
+- Characters may repeat.
+- Numeric and lowercase alphanumeric.
+
+## Vocab:
+
+- Alpha: a b c d e f g h k m n p r v w x y (17 unique)
+- Number: 2 3 4 5 6 7 8 9 (8 unique)
+- Total chars = 25 unique characters
+
+This dataset intends to help improve security on websites.
+Visit [Simple Captcha Library Website](https://simplecaptcha.sourceforge.net/).