docs: Fix broken link in readme

Author: NovemberTang

README.md

@@ -11,7 +11,7 @@ development framework to define cloud infrastructure in code and provision it
 through AWS CloudFormation.
 
 `@guardian/cdk` builds on CDK to provide Guardian-specific [patterns](./src/patterns) and
-[constructs](./src/construcst). It is an opinionated and secure-by-default way to describe and
+[constructs](./src/constructs). It is an opinionated and secure-by-default way to describe and
 provision your AWS resources.
 
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