[#2354] Fixed a typo in ARM

modified:   hooks-ddns-tuning.rst

diff --git a/doc/sphinx/arm/hooks-ddns-tuning.rst b/doc/sphinx/arm/hooks-ddns-tuning.rst
index e1e0e80ec9f31add1e1dc84e42a501430cd406c3..a1a51024fb6ea2a9bbe103fd8ea506b80f7029a6 100644 (file)
--- a/doc/sphinx/arm/hooks-ddns-tuning.rst
+++ b/doc/sphinx/arm/hooks-ddns-tuning.rst
@@ -70,7 +70,7 @@ global expression for that subnet. An example subnet expression is shown below:
         // This is a subnet-specific user context.
         "user-context": {
             "ddns-tuning:" {
-                "hostame-expr": "'guest-'+Int8ToText(substring(pkt4.yiaddr, 0,1))+'-' \
+                "hostname-expr": "'guest-'+Int8ToText(substring(pkt4.yiaddr, 0,1))+'-' \
                                          +Int8ToText(substring(pkt4.yiaddr, 1,2))+'-' \
                                          +Int8ToText(substring(pkt4.yiaddr, 2,3))+'-' \
                                          +Int8ToText(substring(pkt4.yiaddr, 3,4))",