Update documentation links

Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
diff --git a/SUPPORT.md b/SUPPORT.md
index dab7ac5..8fec8b2 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -2,10 +2,10 @@
 
 Here are some useful sources of information about using Mbed TLS:
 
+- [ReadTheDocs](https://tls.mbed.org/kb);
 - API documentation, see the [Documentation section of the
   README](README.md#License);
 - the `docs` directory in the source tree;
-- the [Mbed TLS knowledge Base](https://tls.mbed.org/kb);
 - the [Mbed TLS mailing-list
   archives](https://lists.trustedfirmware.org/archives/list/mbed-tls@lists.trustedfirmware.org/).