Remove source license from generated doc output

The tag documentation included the license in the generated output as a
code block. This switches the code block to a comment so that is not
emitted in the generated HTML.

Change-Id: I9ae61d50310936554ff85c818d44473e0cd85945
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

reference/tag-template.rst

@@ -1,5 +1,4 @@
-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_follows-standard-deprecation.rst

@@ -1,5 +1,4 @@
-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_supports-accessible-upgrade.rst

@@ -1,5 +1,4 @@
-::
+..
-
   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_supports-api-interoperability.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_supports-rolling-upgrade.rst

@@ -1,5 +1,4 @@
-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_supports-upgrade.rst

@@ -1,5 +1,4 @@
-::
+..
-
   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/assert_supports-zero-downtime-upgrade.rst

@@ -1,5 +1,4 @@
-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/stable_follows-policy.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/starter-kit_compute.rst

@@ -1,5 +1,4 @@
-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/status_maintenance-mode.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/tc-approved-release.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/tc_approved-release.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode

reference/tags/vulnerability_managed.rst

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-::
+..
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   This work is licensed under a Creative Commons Attribution 3.0
   Unported License.
   http://creativecommons.org/licenses/by/3.0/legalcode