Fix htmlproofer errors in PRs #1176 & #1177...

caused by hcl.md file rename in qubes-doc commit 7d894a59.

introduction/issue-tracking.md

@@ -273,9 +273,9 @@ you're using, as well as versions of related software packages ([how to copy
 information out of dom0](/doc/how-to-copy-from-dom0/)). If your issue is
 related to hardware, provide as many details as possible about the hardware. A
 great way to do this is by [generating and submitting a Hardware Compatibility
-List (HCL) report](/doc/hcl/#generating-and-submitting-new-reports), then
+List (HCL) report](/doc/how-to-use-the-hcl/#generating-and-submitting-new-reports),
-linking to it in your issue. You may also need to use command-line tools such
+then linking to it in your issue. You may also need to use command-line tools
-as `lspci`. If you're reporting a bug in a package that is in a
+such as `lspci`. If you're reporting a bug in a package that is in a
 [testing](/doc/testing/) repository, please reference the appropriate issue in
 the [updates-status](https://github.com/QubesOS/updates-status/issues)
 repository. Project maintainers really appreciate thorough explanations. It

introduction/support.md

@@ -173,8 +173,8 @@ read. Put yourself in your readers' shoes. What essential information would
 they require in order to be able to help you? Make sure to include that
 information in your message. A great way to provide your hardware details is by
 [generating and submitting a Hardware Compatibility List (HCL)
-report](/doc/hcl/#generating-and-submitting-new-reports), then linking to it in
+report](/doc/how-to-use-the-hcl/#generating-and-submitting-new-reports), then
-your message. [Ask questions the smart
+linking to it in your message. [Ask questions the smart
 way.](http://www.catb.org/esr/faqs/smart-questions.html)
 
 ### Be patient

user/downloading-installing-upgrading/installation-guide.md

@@ -501,7 +501,7 @@ securely and easily.
 
 Consider giving back to the Qubes community and helping other users by
 [generating and submitting a Hardware Compatibility List (HCL)
-report](/doc/hcl/#generating-and-submitting-new-reports).
+report](/doc/how-to-use-the-hcl/#generating-and-submitting-new-reports).
 
 ### Get Started
 

user/hardware/system-requirements.md

@@ -77,9 +77,9 @@ title: System requirements
   of having a portable copy of Qubes, this allows users to test for hardware
   compatibility on multiple machines (e.g., at a brick-and-mortar computer
   store) before deciding on which computer to purchase. (See
-  [hcl-report](/doc/hcl/#generating-and-submitting-new-reports) for advice on
+  [hcl-report](/doc/how-to-use-the-hcl/#generating-and-submitting-new-reports)
-  hardware compatibility testing.) Remember to change the devices assigned to
+  for advice on hardware compatibility testing.) Remember to change the devices
-  your NetVM and USB VM if you move between different machines.
+  assigned to your NetVM and USB VM if you move between different machines.
 - [Advice on finding a VT-d capable
   notebook](https://groups.google.com/d/msg/qubes-users/Sz0Nuhi4N0o/ZtpJdoc0OY8J).
 - You can check whether an Intel processor has VT-x and VT-d on