Fix doc typo

Change-Id: I31473fdebdf73453ec6d156b5c8950ad2b98ccfc
Closes-Bug: PROD-21581 (PROD:21581)
diff --git a/README.rst b/README.rst
index 225d863..1095312 100644
--- a/README.rst
+++ b/README.rst
@@ -79,7 +79,7 @@
             2:
               end: "2.2.3.250"
               start: "2.2.3.45"
-              type: static
+              type: reserved
       dhcp_snippets:
         test-snippet:
           value: option bootfile-name "tftp://192.168.0.10/snippet";