control: Fix typo in Manager::dumpCache

The typo was hardcoding the JSON key name to "name" instead of the
actual parameter name in the parameters section.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I09ea10fe70602e4d3054fd63a6601317298d5726
diff --git a/control/json/manager.cpp b/control/json/manager.cpp
index b837dad..b0da04a 100644
--- a/control/json/manager.cpp
+++ b/control/json/manager.cpp
@@ -146,8 +146,7 @@
     auto& parameters = data["parameters"];
     for (const auto& [name, value] : _parameters)
     {
-        std::visit([&obj = parameters["name"]](auto&& val) { obj = val; },
-                   value);
+        std::visit([&obj = parameters[name]](auto&& val) { obj = val; }, value);
     }
 
     data["services"] = _servTree;