Update NNAPI Extensions documentation

This is a follow-up to change Ia9b99015eec7a48bbf969cbe503862271f09adca

Bug: 118605927
Test: mma
Change-Id: I7ddafca04bce6fd37a9c0877270cee325111d833
diff --git a/neuralnetworks/1.2/types.hal b/neuralnetworks/1.2/types.hal
index 9e7d8f0..77779a6 100644
--- a/neuralnetworks/1.2/types.hal
+++ b/neuralnetworks/1.2/types.hal
@@ -449,7 +449,7 @@
      * {@link OperationTypeRange::BASE_MAX} respectively should be interpreted
      * as an extension operand. The low
      * {@link Model::ExtensionTypeEncoding::LOW_BITS_TYPE} bits of the value
-     * correspond to the value within the extension and the high
+     * correspond to the type ID within the extension and the high
      * {@link Model::ExtensionTypeEncoding::HIGH_BITS_PREFIX} bits encode
      * the "prefix", which maps uniquely to the extension name.
      *