Update language to comply with inclusive guidance

See https://source.android.com/setup/contribute/respectful-code for
reference

Bug: 161896447
Test: m nothing
Change-Id: I13f42b680c6b819a2708c973e7718267c121f862
diff --git a/android/config.go b/android/config.go
index cafc71b..aeed81d 100644
--- a/android/config.go
+++ b/android/config.go
@@ -337,8 +337,8 @@
 		config: config,
 	}
 
-	// Sanity check the build and source directories. This won't catch strange
-	// configurations with symlinks, but at least checks the obvious cases.
+	// Soundness check of the build and source directories. This won't catch strange
+	// configurations with symlinks, but at least checks the obvious case.
 	absBuildDir, err := filepath.Abs(buildDir)
 	if err != nil {
 		return Config{}, err