Update installing-solr.adoc (#3374)

Updated one of the broken link for a lucidworks article within this doc

Author: pradip-talekar

solr/solr-ref-guide/modules/deployment-guide/pages/installing-solr.adoc

@@ -54,7 +54,7 @@ When you're ready to setup Solr for a production environment, please refer to th
 How to size your Solr installation is a complex question that relies on a number of factors, including the number and structure of documents, how many fields you intend to store, the number of users, etc.
 
 It's highly recommended that you spend a bit of time thinking about the factors that will impact hardware sizing for your Solr implementation.
-A very good blog post that discusses the issues to consider is https://lucidworks.com/2012/07/23/sizing-hardware-in-the-abstract-why-we-dont-have-a-definitive-answer/[Sizing Hardware in the Abstract: Why We Don't have a Definitive Answer].
+A very good blog post that discusses the issues to consider is https://lucidworks.com/blog/solr-sizing-guide-estimating-solr-sizing-hardware/[Sizing Hardware in the Abstract: Why We Don't have a Definitive Answer].
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 One thing to note when planning your installation is that a hard limit exists in Lucene for the number of documents in a single index: approximately 2.14 billion documents (2,147,483,647 to be exact).