mmds: fix typo in docs
@@ -249,7 +249,7 @@ The session must start with an HTTP `PUT` request that generates the session tok
In order to be successful, the request must respect the following constraints:
- must be directed towards `/latest/api/token` path
-- must contain a `X-ametadata-token-ttl-seconds` header specifying the token lifetime
+- must contain a `X-metadata-token-ttl-seconds` header specifying the token lifetime
in seconds. The value cannot be lower than 1 or greater than 21600 (6 hours).
- must not contain a `X-Forwarded-For` header.
