Address comments in issue 72

chapter7.adoc

@@ -77,7 +77,7 @@ an APLIC via a memory-mapped register interface. In another case, software
 interacts with an IMSIC through a set of S and VS-level CSRs, along with a
 series of memory-mapped registers.
 
-The RDSM can employ the MTT and/or PMP to limit a supervisor domain's access to
+The RDSM can employ the MTT and/or PMP to restrict a supervisor domain's access to
 the memory-mapped register interface of the interrupt controller associated with
 it. The `Smsdia` supports the connection of multiple interrupt controllers to a
 hart, allowing a supervisor domain to be paired with one of these interrupt