[DOC] server.basePath vs server.rewriteBasePath (elastic#106798)

* server.basePath vs server.rewriteBasePath

Moving content to make pronoun commentary applicable to correct nouns. Lined up to https://www.elastic.co/guide/en/kibana/6.8/settings.html

* Apply suggestions from code review

Co-authored-by: gchaps <33642766+gchaps@users.noreply.github.com>

Co-authored-by: gchaps <33642766+gchaps@users.noreply.github.com>

docs/developer/advanced/development-basepath.asciidoc

@@ -3,9 +3,9 @@
 
 In dev mode, {kib} by default runs behind a proxy which adds a random path component to its URL.
 
-You can set this explicitly using `server.basePath` in <<settings>>. 
+You can set this explicitly using <<server-basePath,`server.basePath`>>. This setting cannot end in a slash (/).
 
-Use the server.rewriteBasePath setting to tell {kib} if it should remove the basePath from requests it receives, and to prevent a deprecation warning at startup. This setting cannot end in a slash (/).
+Use <<server-rewriteBasePath,`server.rewriteBasePath`>> to tell {kib} if it should remove the basePath from requests it receives, and to prevent a deprecation warning at startup. 
 
 If you want to turn off the basepath when in development mode, start {kib} with the `--no-base-path` flag
 
@@ -15,4 +15,3 @@ yarn start --no-base-path
 ----
 
 
-