Docs: fix some case problems in aliases.asciidoc
Make more things uppercase.
[[indices-aliases]]
== Index Aliases
-APIs in elasticsearch accept an index name when working against a
+APIs in Elasticsearch accept an index name when working against a
specific index, and several indices when applicable. The index aliases
API allow to alias an index with a name, with all APIs automatically
converting the alias name to the actual index name. An alias can also be
@@ -374,7 +374,7 @@ DELETE /logs_20162801/_alias/current_day
[[alias-retrieving]]
=== Retrieving existing aliases
-The get index alias api allows to filter by
+The get index alias API allows to filter by
alias name and index name. This api redirects to the master and fetches
the requested index aliases, if available. This api only serialises the
found index aliases.
