nassh: FAQ: Clarify openas=window

Change-Id: Ie9768ab1402c2be6a80ba9aedf009b8d00f6e865
Reviewed-on: https://chromium-review.googlesource.com/c/apps/libapps/+/2150447
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
diff --git a/nassh/doc/FAQ.md b/nassh/doc/FAQ.md
index 07021ab..5ce01d6 100644
--- a/nassh/doc/FAQ.md
+++ b/nassh/doc/FAQ.md
@@ -429,7 +429,7 @@
   3. A `ssh://` URL.
 
   Note that Chrome opens bookmarks in new tabs.  If you want to have a bookmark
-  open as a window, add `?openas=window` to the URI.
+  open as a window, add `?openas=window` to the URI (before `#`).
 
 *** aside
 In the examples below, the *[ID]* field will need adjusting based on the