Fix typo in migration guide
Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/docs/3.0-migration-guide.d/relaxed-psk-semantics.md b/docs/3.0-migration-guide.d/relaxed-psk-semantics.md
index fa38ac3..6b0e794 100644
--- a/docs/3.0-migration-guide.d/relaxed-psk-semantics.md
+++ b/docs/3.0-migration-guide.d/relaxed-psk-semantics.md
@@ -8,7 +8,7 @@
In Mbed TLS 2.x, users would observe later calls overwriting
the effect of earlier calls, with the prevailing PSK being
the one that has been configured last. In Mbed TLS 3.0,
-calling `mbedtls_conf_[opaque_]psk()` multiple times
+calling `mbedtls_ssl_conf_[opaque_]psk()` multiple times
will return an error, leaving the first PSK intact.
To achieve equivalent functionality when migrating to Mbed TLS 3.0,