Merge branch 'patch-12' into 'master'

Fix hash of ruby in update documentation

See merge request !8735

doc/install/installation.md

@@ -124,7 +124,7 @@ Download Ruby and compile it:
 
     mkdir /tmp/ruby && cd /tmp/ruby
     curl --remote-name --progress https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.3.tar.gz
-    echo 'a8db9ce7f9110320f33b8325200e3ecfbd2b534b ruby-2.3.3.tar.gz' | shasum -c - && tar xzf ruby-2.3.3.tar.gz
+    echo '1014ee699071aa2ddd501907d18cbe15399c997d ruby-2.3.3.tar.gz' | shasum -c - && tar xzf ruby-2.3.3.tar.gz
     cd ruby-2.3.3
     ./configure --disable-install-rdoc
     make

doc/update/8.15-to-8.16.md

@@ -36,7 +36,7 @@ Download and compile Ruby:
 ```bash
 mkdir /tmp/ruby && cd /tmp/ruby
 curl --remote-name --progress https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.3.tar.gz
-echo 'a8db9ce7f9110320f33b8325200e3ecfbd2b534b ruby-2.3.3.tar.gz' | shasum -c - && tar xzf ruby-2.3.3.tar.gz
+echo '1014ee699071aa2ddd501907d18cbe15399c997d ruby-2.3.3.tar.gz' | shasum -c - && tar xzf ruby-2.3.3.tar.gz
 cd ruby-2.3.3
 ./configure --disable-install-rdoc
 make