Fix casing of feature flag

Author: pjanotti

.chloggen/hostmetricsreceiver-process-scraper-windows-optimization.yaml

@@ -9,7 +9,7 @@ component: hostmetricsreceiver
 # A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
 note: >
   Reduced the cost of retrieving number of threads and parent process ID on Windows.
-  Disable the featuregate `hostmetrics.process.OnWindowsUseNewGetProcesses` to fallback to the previous implementation.
+  Disable the featuregate `hostmetrics.process.onWindowsUseNewGetProcesses` to fallback to the previous implementation.
 
 # Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
 issues: [32947, 38589]

receiver/hostmetricsreceiver/internal/scraper/processscraper/get_process_handles_windows.go

@@ -16,7 +16,7 @@ import (
 )
 
 var useNewGetProcessHandles = featuregate.GlobalRegistry().MustRegister(
-	"hostmetrics.process.OnWindowsUseNewGetProcesses",
+	"hostmetrics.process.onWindowsUseNewGetProcesses",
 	featuregate.StageBeta,
 	featuregate.WithRegisterDescription("If disabled, the scraper will use the legacy implementation to retrieve process handles."),
 )