DOCSP-46846: Installation redirect (#106)

Author: norareidy

config/redirects

@@ -45,4 +45,5 @@ raw: ${prefix}/stable -> ${base}/current/
 (v5.2-master]: ${prefix}/${version}/reference/observables -> ${base}/${version}/observables/
 (v5.2-master]: ${prefix}/${version}/validate-signatures/ -> ${base}/${version}/
 (v5.2-master]: ${prefix}/${version}/builders/ -> ${base}/${version}/
-(v5.2-master]: ${prefix}/${version}/bson/ -> ${base}/${version}/
+(v5.2-master]: ${prefix}/${version}/bson/ -> ${base}/${version}/
+(v5.2-master]: ${prefix}/${version}/installation/ -> ${base}/${version}/get-started/download-and-install/