Cosmetic changes in test/README.md and test/README.chroot.md.

Test: Render these files as HTML and check their outputs manually
Bug: 34729697
Change-Id: I34012734461c51acf59a2a0718956033e1c6cb65
diff --git a/test/README.chroot.md b/test/README.chroot.md
index ccba266..438a9ad 100644
--- a/test/README.chroot.md
+++ b/test/README.chroot.md
@@ -20,9 +20,10 @@
 system") running on the device. This has some benefits:
 
 * no need to build and flash a whole device to do ART testing (or "overwriting"
-  and existing ART by syncing the system partition);
-* the possibility to use a smaller AOSP Android manifest (`master-art`) to build
-  ART and the required dependencies for testing;
+  an existing ART by syncing the system partition);
+* the possibility to use a smaller AOSP Android manifest
+  ([`master-art`](https://android.googlesource.com/platform/manifest/+/refs/heads/master-art/default.xml))
+  to build ART and the required dependencies for testing;
 * no instability due to updating/replacing ART on the system partition (a
   functional Android Runtime is necessary to properly boot a device);
 * the possibility to have several standalone ART instances (one per directory,
@@ -91,7 +92,7 @@
         (`art/tools/buildbot-build.sh --target`) above.
     * Note: The `-j` option is not honored yet (b/129930445).
     * Specific tests to run can be passed on the command line, specified by
-    their absolute paths beginning with "/apex/".
+    their absolute paths beginning with `/apex/`.
 8. Run ART run-tests:
     * On a 64-bit target:
         ```bash
diff --git a/test/README.md b/test/README.md
index f855329..d199bfe 100644
--- a/test/README.md
+++ b/test/README.md
@@ -1,11 +1,9 @@
 # ART Testing
 
-There are two suites of tests in the Android Runtime (ART): run-tests and
-gtests:
-* run-tests  
-  Tests of the ART runtime using Dex bytecode (mostly written in Java).
-* gtests  
-  C++ tests exercising various aspects of ART.
+There are two suites of tests in the Android Runtime (ART):
+* _ART run-tests_: Tests of the ART runtime using Dex bytecode (mostly written
+  in Java).
+* _ART gtests_: C++ tests exercising various aspects of ART.
 
 ## ART run-tests
 
@@ -70,10 +68,10 @@
 
 ART gtests are defined in various directories within the ART project (usually in
 the same directory as the code they exercise). Their source files usually end
-with the suffix `_test.cc.`. The construction logic of these tests is
-implemented in ART's build system (`Android.bp` and `Android*.mk` files). On
-host, these gtests can be run by executing `m test-art-host-gtest`. On device,
-the recommended approach is to run these tests in a chroot environment (see
+with the suffix `_test.cc`. The construction logic of these tests is implemented
+in ART's build system (`Android.bp` and `Android*.mk` files). On host, these
+gtests can be run by executing `m test-art-host-gtest`. On device, the
+recommended approach is to run these tests in a chroot environment (see
 `README.chroot.md` in this directory).