core: Makefile: fix a typo in a comment

Change-Id: I1a8f1a4e2d7d29fa930fd0a07f4885c162f3e1f4
Signed-off-by: Alex Naidis <alex.naidis@linux.com>
diff --git a/core/Makefile b/core/Makefile
index 7082f5a..b2305e6 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -284,7 +284,7 @@
 # -----------------------------------------------------------------
 # vendor build.prop
 #
-# For verifying that the vendor build is what we thing it is
+# For verifying that the vendor build is what we think it is
 ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
 INSTALLED_VENDOR_BUILD_PROP_TARGET := $(TARGET_OUT_VENDOR)/build.prop
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_VENDOR_BUILD_PROP_TARGET)