Keep Pigweed focused on 32-bit targets

Change-Id: I9446e3550e594cc256149ce65beb7e2a0298b6d4
diff --git a/docs/targets.rst b/docs/targets.rst
index d961d39..e16b012 100644
--- a/docs/targets.rst
+++ b/docs/targets.rst
@@ -1,9 +1,9 @@
 =======
 Targets
 =======
-Pigweed is designed to support many 32-bit (and even some 64-bit) targets. This
-section contains documentation for the targets used for upstream Pigweed
-development, though more may exist outside the main Pigweed repository.
+Pigweed is designed to support many 32-bit targets. This section contains
+documentation for the targets used for upstream Pigweed development,
+though more may exist outside the main Pigweed repository.
 
 .. toctree::
   :maxdepth: 1