Correction to ChangeLog

Corrected function name for rsa_rsassa_pkcs1_v15_sign()
diff --git a/ChangeLog b/ChangeLog
index 20af9bc..25b0ed4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,7 +13,7 @@
    * Fix bug in certificate validation that caused valid chains to be rejected
      when the first intermediate certificate has pathLenConstraint=0. Found by
      Nicholas Wilson. Introduced in mbed TLS 1.3.15. #280
-   * Removed potential leak in mbedtls_rsa_rsassa_pkcs1_v15_sign(), found by
+   * Removed potential leak in rsa_rsassa_pkcs1_v15_sign(), found by
      JayaraghavendranK. #372
 
 Changes