[js-api] Remove incorrect note about object caching. (#1036)
Fixes #985.
diff --git a/document/js-api/index.bs b/document/js-api/index.bs
index fa5c407..ced9db3 100644
--- a/document/js-api/index.bs
+++ b/document/js-api/index.bs
@@ -227,7 +227,8 @@
<h3 id="object-caches">WebAssembly JS Object Caches</h3>
-Note: There are several WebAssembly objects that may have a corresponding JavaScript object. The correspondence is stored in a per-agent mapping from WebAssembly [=address=]es to JavaScript objects. This mapping is used to ensure that, for a given [=agent=], there exists at most one JavaScript object for a particular WebAssembly address.
+Note: There are several WebAssembly objects that may have a corresponding JavaScript object. The correspondence is stored in a per-agent mapping from WebAssembly [=address=]es to JavaScript objects.
+This mapping is used to ensure that, for a given [=agent=], there exists at most one JavaScript object for a particular WebAssembly address. However, this property does not hold for shared objects.
Each [=agent=] is associated with the following [=ordered map=]s:
* The <dfn>Memory object cache</dfn>, mapping [=memory address=]es to {{Memory}} objects.
