Fix typos, grammar and wording in documentation
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index f14b9a2..6a0f0a7 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -10221,7 +10221,7 @@
                               size_t buf_len,
                               size_t *olen )
 {
-    /* Unimplemented yet */
+    /* Unimplemented */
     (void) ssl;
 
     if( buf != NULL )
@@ -10239,7 +10239,7 @@
                               const unsigned char *buf,
                               size_t len )
 {
-    /* Unimplemented yet */
+    /* Unimplemented */
     (void) ssl;
     (void) buf;
     (void) len;