Fix minor typos

Signed-off-by: Jan Bruckner <jan@janbruckner.de>
diff --git a/include/mbedtls/ecp.h b/include/mbedtls/ecp.h
index ac8b7c0..0c1790d 100644
--- a/include/mbedtls/ecp.h
+++ b/include/mbedtls/ecp.h
@@ -918,7 +918,7 @@
  * \note            To prevent timing attacks, this function
  *                  executes the exact same sequence of base-field
  *                  operations for any valid \p m. It avoids any if-branch or
- *                  array index depending on the value of \p m. If also uses
+ *                  array index depending on the value of \p m. It also uses
  *                  \p f_rng to randomize some intermediate results.
  *
  * \param grp       The ECP group to use.