Sensor.Value: fix minor spelling mistake

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I4da4cd939804b21bc6117c790af552afca761aee
diff --git a/yaml/xyz/openbmc_project/Sensor/Value.interface.yaml b/yaml/xyz/openbmc_project/Sensor/Value.interface.yaml
index f2139a7..360b888 100644
--- a/yaml/xyz/openbmc_project/Sensor/Value.interface.yaml
+++ b/yaml/xyz/openbmc_project/Sensor/Value.interface.yaml
@@ -100,7 +100,7 @@
     - name: monitoring
       description: >
           Sensors may monitor the BMC's resource utilization and implement an
-          associatoin to the Bmc item.
+          association to the Bmc item.
       reverse_names:
           - monitored_by
       required_endpoint_interfaces: