fix case for SafetyNet

Author: thestinger

static/articles/attestation-compatibility-guide.html

@@ -50,7 +50,7 @@
         <main id="attestation-compatibility-guide">
             <h1><a href="#attestation-compatibility-guide">Attestation compatibility guide</a></h1>
 
-            <p>Apps using the Play Integrity API or legacy Safetynet attestation API to check the
+            <p>Apps using the Play Integrity API or legacy SafetyNet attestation API to check the
             authenticity/integrity of the OS can support GrapheneOS by using the standard Android
             hardware attestation API and permitting our official release signing keys.
             Android's <a href="https://developer.android.com/training/articles/security-key-attestation">hardware