Fix Doxygen misuse
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index 09a58a2..597da25 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -1727,7 +1727,7 @@
/** Multipurpose field.
*
* - DTLS: records with a bad MAC received.
- * - TLS: accumulated length of handshake fragments (up to ::in_hslen).
+ * - TLS: accumulated length of handshake fragments (up to \c in_hslen).
*
* This field is multipurpose in order to preserve the ABI in the
* Mbed TLS 3.6 LTS branch. Until 3.6.2, it was only used in DTLS