Fix typos in documentation and constants with typo finding tool

Signed-off-by: bootstrap-prime <bootstrap.prime@gmail.com>
diff --git a/include/mbedtls/platform_util.h b/include/mbedtls/platform_util.h
index f982db8..f3af3ac 100644
--- a/include/mbedtls/platform_util.h
+++ b/include/mbedtls/platform_util.h
@@ -67,7 +67,7 @@
  * \brief       User supplied callback function for parameter validation failure.
  *              See #MBEDTLS_CHECK_PARAMS for context.
  *
- *              This function will be called unless an alternative treatement
+ *              This function will be called unless an alternative treatment
  *              is defined through the #MBEDTLS_PARAM_FAILED macro.
  *
  *              This function can return, and the operation will be aborted, or