Redfish Cheatsheet: Fix Link

https://github.com/openbmc/docs/commit/b41aff0fabe137cdb0cfff584b5fe4a41c0c8e77#diff-69d0c5b64bdbed527f8d5d4eea750ba9L85
broke the Redfish link, fix it.

Tested: https://jbt.github.io/markdown-editor/
Change-Id: I6460ae9b0f2804aaa348ff586f08f76d46715756
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/REDFISH-cheatsheet.md b/REDFISH-cheatsheet.md
index 0528eba..d73a1a9 100644
--- a/REDFISH-cheatsheet.md
+++ b/REDFISH-cheatsheet.md
@@ -89,4 +89,6 @@
 Change password to "0penBmc1":
 ```
 $ curl -k -H "X-Auth-Token: $token" -X PATCH -d '{"Password": "0penBmc1"}' https://${bmc}/redfish/v1/AccountService/Accounts/root
-```
\ No newline at end of file
+```
+
+[1]: https://www.dmtf.org/standards/redfish