docs: Use full line to distinguish the footer

The `---` evalves to `—`. This patch proposes `----` which produces the
full `----------------------------` across the page.
Signed-off-by: NLukáš Doktor <ldoktor@redhat.com>

docs/source/release_notes/0_27_0.rst

@@ -53,7 +53,7 @@ Changes in avocado-vt:
 
 See you in a couple of weeks for our next release! Happy testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/latest/api/utils/avocado.utils.html#module-avocado.utils.cpu
 | [2] http://avocado-framework.readthedocs.org/en/latest/api/utils/avocado.utils.html#module-avocado.utils.git

docs/source/release_notes/0_27_1.rst

@@ -31,7 +31,7 @@ We, the people that bring you avocado will be at LinuxCon North America
 and say hello to yours truly (lmr). And of course, consider attending
 my presentation on avocado [2].
 
----
+----
 
 | [1] https://github.com/avocado-framework/avocado/compare/0.27.0...0.27.1
 | [2] http://sched.co/3Xh9

docs/source/release_notes/0_28_0.rst

@@ -39,7 +39,7 @@ See you in a few weeks for our next release! Happy testing!
 
 The avocado development team
 
----
+----
 
 | [1] https://github.com/avocado-framework/avocado/compare/0.27.0...0.28.0
 | [2] https://github.com/avocado-framework/avocado-vt/commit/fd9b29bbf77d7f0f3041e66a66517f9ba6b8bf48

docs/source/release_notes/0_29_0.rst

@@ -52,7 +52,7 @@ our YUM/DNF repo and get the latest goodies!
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/0.29.0
 | [2] http://avocado-framework.readthedocs.org/en/0.29.0/ReferenceGuide.html#test-resolution

docs/source/release_notes/0_30_0.rst

@@ -47,7 +47,7 @@ packages or from source[1].
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/0.30.0/GetStartedGuide.html
 | [2] https://github.com/avocado-framework/avocado/compare/0.29.0...0.30.0

docs/source/release_notes/0_31_0.rst

@@ -55,7 +55,7 @@ the project repos for Fedora 22, Fedora 23, EPEL 6 and EPEL 7.
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/0.31.0/ReferenceGuide.html#job-cleanup
 | [2] http://avocado-framework.readthedocs.org/en/0.31.0/Plugins.html

docs/source/release_notes/0_32_0.rst

@@ -51,7 +51,7 @@ Fedora 22, Fedora 23, EPEL 6 and EPEL 7.
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/0.32.0/Replay.html
 | [2] http://github.com/avocado-framework/avocado-misc-tests

docs/source/release_notes/0_33_0.rst

@@ -87,7 +87,7 @@ Fedora 22, Fedora 23, EPEL 6 and EPEL 7.
 
 Happy hacking and testing!
 
----
+----
 
 | [1] https://github.com/avocado-framework/avocado/compare/0.32.0...0.33.0
 | [2] https://github.com/avocado-framework/avocado-vt/compare/0.32.0...0.33.0

docs/source/release_notes/0_34_0.rst

@@ -103,7 +103,7 @@ Fedora 22, Fedora 23, EPEL 6 and EPEL 7.
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/0.34.0/LoggingSystem.html
 | [2] http://avocado-framework.readthedocs.org/en/0.34.0/LoggingSystem.html#tweaking-the-ui

docs/source/release_notes/35_0.rst

@@ -99,7 +99,7 @@ If you have any concerns or questions, please let us know.
 
 Happy hacking and testing!
 
----
+----
 
 | [1] http://avocado-framework.readthedocs.org/en/35.0/ResultFormats.html#exit-codes
 | [2] https://github.com/avocado-framework/avocado/blob/35.0/etc/avocado/avocado.conf#L41

docs/source/release_notes/36_0.rst

@@ -49,7 +49,7 @@ either with packages or from source[4].
 
 Happy hacking and testing!
 
----
+----
 
 | [1] https://github.com/avocado-framework/avocado/tree/36lts
 | [2] https://www.redhat.com/archives/avocado-devel/2016-April/msg00038.html

docs/source/release_notes/37_0.rst

@@ -32,7 +32,7 @@ For Avocado-VT, please check the full Avocado-VT changelog[4].
 
 Happy hacking and testing!
 
----
+----
 
 | [1] https://www.redhat.com/archives/avocado-devel/2016-May/msg00025.html
 | [2] https://en.wikipedia.org/wiki/Test_Anything_Protocol

docs/source/release_notes/38_0.rst

@@ -121,6 +121,6 @@ community and avoid confusion.
 
 Happy hacking and testing!
 
----
+----
 
 Sprint Theme: https://trello.com/c/Y6IIFXBS/732-sprint-theme