tests: minor tweaks in comments

test/test0007/hello-aarch64.sh

@@ -10,7 +10,7 @@
 ##
 ## M2-Planet is distributed in the hope that it will be useful,
 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License

test/test0025/hello-amd64.sh

@@ -21,6 +21,7 @@ set -ex
 TMPDIR="test/test0025/tmp-amd64"
 mkdir -p ${TMPDIR}
 
+# Build the test
 bin/M2-Planet \
 	--architecture amd64 \
 	-f M2libc/amd64/Linux/unistd.h \