Fix capitalisation of VM in comments.

Change-Id: Ib337ebdebee9cb917029c464f292f1b4cbf11cba
diff --git a/test/hftest/BUILD.gn b/test/hftest/BUILD.gn
index 3900c36..e08c62a 100644
--- a/test/hftest/BUILD.gn
+++ b/test/hftest/BUILD.gn
@@ -18,7 +18,7 @@
   include_dirs = [ "inc" ]
 }
 
-# Testing framework for a primary vm.
+# Testing framework for a primary VM.
 source_set("hftest_primary_vm") {
   testonly = true
 
@@ -30,7 +30,7 @@
   ]
 }
 
-# Testing framework for a secondary vm. It's currently just a slave VM and
+# Testing framework for a secondary VM. It's currently just a slave VM and
 # can't affect the tests directly.
 source_set("hftest_secondary_vm") {
   testonly = true
diff --git a/test/vmapi/primary_with_secondaries/spci.c b/test/vmapi/primary_with_secondaries/spci.c
index be442b8..ac54da7 100644
--- a/test/vmapi/primary_with_secondaries/spci.c
+++ b/test/vmapi/primary_with_secondaries/spci.c
@@ -50,7 +50,7 @@
 }
 
 /**
- * Send a message to a secondary VM spoofing the source vm id.
+ * Send a message to a secondary VM spoofing the source VM id.
  */
 TEST(spci, msg_send_spoof)
 {