Fix a few style issues
diff --git a/include/mbedtls/ssl_internal.h b/include/mbedtls/ssl_internal.h
index 511715f..1c8709f 100644
--- a/include/mbedtls/ssl_internal.h
+++ b/include/mbedtls/ssl_internal.h
@@ -270,7 +270,7 @@
* Goals for these helpers:
* - generate minimal code, eg don't test if mode is DTLS in a DTLS-only build
* - make the flow clear to the compiler, so that in TLS and DTLS combined
- * builds, when there are two branches, it knows exactly one of them is taken
+ * builds, when there are two branches, it knows exactly one of them is taken
* - preserve readability
*
* There are three macros: