Improve documentation

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/docs/architecture/tls13-support.md b/docs/architecture/tls13-support.md
index fc09f31..6c39bc5 100644
--- a/docs/architecture/tls13-support.md
+++ b/docs/architecture/tls13-support.md
@@ -415,7 +415,7 @@
 ---------------------------------------
 
 The TLS 1.3 handshake protocol is implemented as a state machine. The
-functions `mbedtls_ssl_tls13_handshake_client/server_step` are the top level
+functions `mbedtls_ssl_tls13_handshake_{client,server}_step` are the top level
 functions of that implementation. They are implemented as a switch over all the
 possible states of the state machine.
 
@@ -435,7 +435,7 @@
 client side is a example of that.
 
 The names of the handlers processing/writing an handshake message are
-prefixed with `(mbedtls_)ssl_tls13_process/write`. To ease the maintenance and
+prefixed with `(mbedtls_)ssl_tls13_{process,write}`. To ease the maintenance and
 reduce the risk of bugs, the code of the message processing and writing
 handlers is split into a sequence of stages.