Nit from PR review

Co-authored-by: Mark "Murch" Erhardt <[email protected]>

Author: bigspider

bip-0388.mediawiki

@@ -62,7 +62,7 @@ This makes it impossible for an attacker to surreptitiously modify the policy, t
 
 ==== Avoiding key reuse ====
 
-Reusing public keys within a Script is a source of malleability when using miniscript policies, which has potential security implications.
+Reusing public keys within a script is a source of malleability when using miniscript policies, which has potential security implications.
 
 Reusing keys across different UTXOs harms user privacy by allowing external parties to link these UTXOs to the same entity once they are spent.