Change http to https in links to external sites (#1784)

see also [PR#1782](#1782)

Author: NataliaIvakina

modules/ROOT/pages/installation/linux/debian.adoc

@@ -29,7 +29,7 @@ This is due to changes in Oracle's Debian package manifest between Java versions
 
 [source, shell]
 ----
-echo "deb http://httpredir.debian.org/debian stretch-backports main" | sudo tee -a /etc/apt/sources.list.d/stretch-backports.list
+echo "deb https://httpredir.debian.org/debian stretch-backports main" | sudo tee -a /etc/apt/sources.list.d/stretch-backports.list
 sudo apt-get update
 sudo apt-get install openjdk-11-jre
 ----

modules/ROOT/pages/installation/linux/tarball.adoc

@@ -7,7 +7,7 @@ Before you install Neo4j on Linux from a tarball and run it as a console applica
 [[unix-console]]
 == Install Neo4j from a tarball
 
-. If it is not already installed, get link:http://openjdk.java.net/[OpenJDK 11] or link:http://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
+. If it is not already installed, get link:https://openjdk.java.net/[OpenJDK 11] or link:https://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
 . Download the latest Neo4j tarball from https://neo4j.com/download-center/[Neo4j Download Center] and unpack it:
 +
 [source, shell, subs="attributes"]

modules/ROOT/pages/installation/osx.adoc

@@ -6,7 +6,7 @@
 [[osx-console]]
 == Unix console application
 
-. If it is not already installed, get link:http://openjdk.java.net/[OpenJDK 11] or link:http://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
+. If it is not already installed, get link:https://openjdk.java.net/[OpenJDK 11] or link:https://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
 . Download the latest release from {neo4j-download-center-uri}[Neo4j Download Center].
 +
 Select the appropriate tar.gz distribution for your platform.

modules/ROOT/pages/installation/windows.adoc

@@ -6,7 +6,7 @@
 [[windows-console]]
 == Windows console application
 
-. If it is not already installed, get link:http://openjdk.java.net/[OpenJDK 11] or link:http://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
+. If it is not already installed, get link:https://openjdk.java.net/[OpenJDK 11] or link:https://www.oracle.com/technetwork/java/javase/downloads/index.html[Oracle Java 11].
 . Download the latest release from {neo4j-download-center-uri}[Neo4j Download Center].
 +
 Select the appropriate ZIP distribution.