all: fix more typos caused by unnecessary repetition

Updates #cleanup

Change-Id: I5c0b8f0152581231252ab97dd1820d8b3fcbe450
Signed-off-by: Alex Chan <alexc@tailscale.com>

util/syspolicy/source/policy_reader.go

@@ -91,7 +91,7 @@ func newReader(store Store, origin *setting.Origin) (*Reader, error) {
 }
 
 // GetSettings returns the current [*setting.Snapshot],
-// re-reading it from from the underlying [Store] only if the policy
+// re-reading it from the underlying [Store] only if the policy
 // has changed since it was read last. It never fails and returns
 // the previous version of the policy settings if a read attempt fails.
 func (r *Reader) GetSettings() *setting.Snapshot {

util/winutil/startupinfo_windows.go

@@ -156,7 +156,7 @@ func canBeInherited(h windows.Handle) bool {
 
 // SetStdHandles sets the StdInput, StdOutput, and StdErr handles and configures
 // their inheritability as needed. When the handles are valid, non-console
-// kernel objects, sib takes ownership of of them. All three handles may be set
+// kernel objects, sib takes ownership of them. All three handles may be set
 // to zero to indicate that the parent's std handles should not be implicitly
 // inherited.
 //