Merge pull request KhronosGroup#279 from npmiller/fix-typo-bracket

Fix typo in memory model section

Author: keryell

adoc/chapters/architecture.adoc

@@ -750,7 +750,7 @@ image::{images}/device_to_device2.svg[align="center",opts="{imageopts}"]
 submitted to two distinct queues, and potential implementation in an OpenCL
 <<backend>> by a SYCL runtime. Note that in this example, each SYCL buffer
 (_b2,b2_) is implemented as separate [code]#cl_mem# objects per
-context}
+context.
 
 Note that the order of the definition of the accessors within the
 <<command-group>> is irrelevant to the requirements they define.