Fix typos

Signed-off-by: Tom Cosgrove <tom.cosgrove@arm.com>
diff --git a/include/mbedtls/config.h b/include/mbedtls/config.h
index 1e4d95e..acdb7ac 100644
--- a/include/mbedtls/config.h
+++ b/include/mbedtls/config.h
@@ -871,7 +871,7 @@
  * - Changes the behaviour of TLS 1.2 clients (not servers) when using the
  *   ECDHE-ECDSA key exchange (not other key exchanges) to make all ECC
  *   computations restartable:
- *   - ECDH operations from the key exchange, only for Short Weierstass
+ *   - ECDH operations from the key exchange, only for Short Weierstrass
  *     curves;
  *   - verification of the server's key exchange signature;
  *   - verification of the server's certificate chain;