Update shortTitle for PM feedback (#22458)

Author: felicitymay

content/code-security/supply-chain-security/understanding-your-software-supply-chain/index.md

@@ -13,6 +13,6 @@ children:
   - /about-the-dependency-graph
   - /exploring-the-dependencies-of-a-repository
   - /about-dependency-review
-shortTitle: Understand supply chain
+shortTitle: Understand your supply chain
 ---