"master" was renamed "main".

Test: N/A
Change-Id: I86d5578eaac260e55a9583db7ab49812b4ba1f5d
diff --git a/cmd/path_interposer/main.go b/cmd/path_interposer/main.go
index 8b9de52..c8c1464 100644
--- a/cmd/path_interposer/main.go
+++ b/cmd/path_interposer/main.go
@@ -140,7 +140,7 @@
 			defer func() { <-waitForLog }()
 		}
 		if config.Error {
-			return 1, fmt.Errorf("%q is not allowed to be used. See https://android.googlesource.com/platform/build/+/master/Changes.md#PATH_Tools for more information.", base)
+			return 1, fmt.Errorf("%q is not allowed to be used. See https://android.googlesource.com/platform/build/+/main/Changes.md#PATH_Tools for more information.", base)
 		}
 	}