Fixes typos in Lesson 7.8

Author: jarturomora

docs/lectures/lecture-07/lesson-09/README.md

@@ -16,7 +16,7 @@ After completing this lesson, you'll be able to:
 Internet resources mentioned in the lesson's video:
 
 * [GitHub repo used in this lesson: Starter Kit for Marlowe](https://github.com/input-output-hk/marlowe-starter-kit/tree/PLT-3026)
-* [Cardanoscan](https://preprod.cardanoscan.io/))
+* [Cardanoscan](https://preprod.cardanoscan.io/)
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