Spelling fixes

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Change-Id: I1de3fdd00d0c132987b1eeb78b2945f30d3ab538
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/main.cpp b/main.cpp
index 6f8f070..ed1b8c7 100644
--- a/main.cpp
+++ b/main.cpp
@@ -86,7 +86,7 @@
     std::shared_ptr<SensorManager> mgmr;
     std::map<int64_t, std::shared_ptr<PIDZone>> zones;
 
-    // Create a manger for the ModeBus because we own it.
+    // Create a manager for the ModeBus because we own it.
     static constexpr auto modeRoot = "/xyz/openbmc_project/settings/fanctrl";
     sdbusplus::server::manager::manager(ModeControlBus, modeRoot);