docs: fix dead Searx-instance links to https://searx.space

Related to #1853 / BTW update year of copyright note
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

docs/conf.py

@@ -11,7 +11,7 @@ DOCS_URL = os.environ.get("DOCS_URL", "https://asciimoo.github.io/searx/")
 # Project --------------------------------------------------------------
 
 project = u'searx'
-copyright = u'2015-2019, Adam Tauber, Noémi Ványi'
+copyright = u'2015-2020, Adam Tauber, Noémi Ványi'
 author = u'Adam Tauber'
 release, version = VERSION_STRING, VERSION_STRING
 highlight_language = 'none'

docs/dev/reST.rst

@@ -285,7 +285,7 @@ content becomes smart.
    :rst:role:`pep`            :pep:`8`                           ``:pep:`8```
    sphinx.ext.extlinks_
    --------------------------------------------------------------------------------------------------
-   project's wiki article     :wiki:`Searx-instances`            ``:wiki:`Searx-instances```
+   project's wiki article     :wiki:`Offline-engines`            ``:wiki:`Offline-engines```
    to docs public URL         :docs:`dev/reST.html`              ``:docs:`dev/reST.html```
    files & folders origin     :origin:`docs/dev/reST.rst`        ``:origin:`docs/dev/reST.rst```
    pull request               :pull:`1756`                       ``:pull:`1756```

docs/index.rst

@@ -20,8 +20,8 @@ Searx is a free internet metasearch engine which aggregates results from more
 than 70 search services.  Users are neither tracked nor profiled.  Additionally,
 searx can be used over Tor for online anonymity.
 
-Get started with searx by using one of the :wiki:`Searx-instances`.  If you
-don't trust anyone, you can set up your own, see :ref:`installation`.
+Get started with searx by using one of the Searx-instances_.  If you don't trust
+anyone, you can set up your own, see :ref:`installation`.
 
 .. toctree::
    :maxdepth: 2
@@ -30,3 +30,5 @@ don't trust anyone, you can set up your own, see :ref:`installation`.
    admin/index
    dev/index
    blog/index
+
+.. _Searx-instances: https://searx.space