Update docs/sdk/src/reference_docs/tokens_in_substrate.rs

Co-authored-by: Francisco Aguirre <[email protected]>

docs/sdk/src/reference_docs/tokens_in_substrate.rs

@@ -20,7 +20,7 @@
 //! This reference doc serves as a high-level overview of the token-related logic in Substrate and
 //! how to properly apply it to your use case.
 //!
-//! On completion of reading this doc, you should have a good understanding of
+//! On completion of reading this doc, you should have a good understanding of:
 //! - The distinction between token traits and trait implementations in Substrate, and why this
 //!   distinction is helpful
 //! - Token-related traits avaliable in Substrate