fixed pdf src paths that didn't auto update in Gitbook (#1745)

Co-authored-by: ecbsj <crypto67sauce@gmail.com>

Author: eric-stacks

docs/learn/sbtc/security-model-of-sbtc/sbtc-audits.md

@@ -2,10 +2,10 @@
 
 Several third-party security audits have been conducted on the sBTC system and can be referenced here.
 
-{% file src="../.gitbook/assets/Ottersec - stacks_wsts_audit_final.pdf" %}
+{% file src="../../.gitbook/assets/Ottersec - stacks_wsts_audit_final.pdf" %}
 
-{% file src="../.gitbook/assets/Ottersec - stacks_sbtc_audit_final.pdf" %}
+{% file src="../../.gitbook/assets/Ottersec - stacks_sbtc_audit_final.pdf" %}
 
-{% file src="../.gitbook/assets/CoinFabrik_WSTS.pdf" %}
+{% file src="../../.gitbook/assets/CoinFabrik_WSTS.pdf" %}
 
-{% file src="../.gitbook/assets/Clarity Alliance - sBTC-2.pdf" %}
+{% file src="../../.gitbook/assets/Clarity Alliance - sBTC-2.pdf" %}