H1: Update titles

exercises/h1.md

@@ -43,7 +43,7 @@ Let's download a widely used Xubuntu 16.04.3 LTS (x86_64 processor architecture)
 [Xubuntu 16.04.3 LTS - Torrent download](http://cdimage.ubuntu.com/xubuntu/releases/16.04.3/release/xubuntu-16.04-desktop-amd64.iso.torrent)
 [Xubuntu 16.04.3 LTS - ISO image file directly from a server - 1.2G](http://cdimage.ubuntu.com/xubuntu/releases/16.04.3/release/xubuntu-16.04-desktop-amd64.iso)
 
-**Comparing checksums**
+#### Comparing checksums
 
 If you wanted to make sure the ISO image you just downloaded is valid, you should check its checksum (mainly for security reasons). In this way you make sure that no malicious party has altered the image you trust and the download process has succeeded. You should take a closer look on sha256sum and md5sum values of your ISO image file. The value must match the one which is published on the Ubuntu download site ([sha256sum](http://cdimage.ubuntu.com/xubuntu/releases/16.04.3/release/SHA256SUMS), [md5sum](http://cdimage.ubuntu.com/xubuntu/releases/16.04.3/release/MD5SUMS)).
 
@@ -418,4 +418,6 @@ rsync -axHAWXS --numeric-ids --info=progress2 /mnt/my_hdd1/somefilefolder/ /mnt/
 
 In addition, you must consider any [symbolic links](https://en.wikipedia.org/wiki/Symbolic_link) included in copy process. Keep in mind to watch out user permissions as well (does the current user have permissions to copy selected files?).
 
+#### fstransform - convert existing file system to another format
+
 **NOTE:** There is an experimental tool to convert your existing ext2/3/4 & FAT/NTFS file systems to another file system format. For more information, see [fstransform - fedoramagazine.com](https://fedoramagazine.org/transform-file-systems-in-linux/) (note that installation instructions using `dnf` command are Fedora specific only. You should use `apt-get` instead on Debian/Ubuntu/Mint...)