[DOCS] http -> https, remove outdated plugin docs (#60380)

Plugin discovery documentation contained information about installing
Elasticsearch 2.0 and installing an oracle JDK, both of which is no
longer valid.

While noticing that the instructions used cleartext HTTP to install
packages, this commit replaces HTTPs links instead of HTTP where possible.

In addition a few community links have been removed, as they do not seem
to exist anymore.
This commit is contained in:
Alexander Reelsen 2020-07-31 21:58:38 +02:00 committed by GitHub
parent 947186719e
commit c7ac9e7073
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80 changed files with 188 additions and 242 deletions

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@ -19,7 +19,7 @@ This allows for very fast execution, even faster than if you had written a `nati
Expressions support a subset of javascript syntax: a single expression.
See the link:http://lucene.apache.org/core/6_0_0/expressions/index.html?org/apache/lucene/expressions/js/package-summary.html[expressions module documentation]
See the https://lucene.apache.org/core/{lucene_version_path}/expressions/index.html?org/apache/lucene/expressions/js/package-summary.html[expressions module documentation]
for details on what operators and functions are available.
Variables in `expression` scripts are available to access: