Update comment in build/toolchain/goma.gni

build/toolchain/goma.gni

Index: build/toolchain/goma.gni
diff --git a/build/toolchain/goma.gni b/build/toolchain/goma.gni
index cb25cfd874473e9bba042cea2e4ee5b0af781d59..aeabfa91547b178491a1e8b43e8cef75a7a6f2b9 100644
--- a/build/toolchain/goma.gni
+++ b/build/toolchain/goma.gni
@@ -10,10 +10,10 @@ declare_args() {
 
   # Set the default value based on the platform.
   if (is_win) {
-    # Absolute directory containing the Goma source code.
+    # Absolute directory containing the gomacc.exe binary.
     goma_dir = "C:\goma\goma-win64"
   } else {
-    # Absolute directory containing the Goma source code.
+    # Absolute directory containing the gomacc binary.
     goma_dir = getenv("HOME") + "/goma"
   }
 }