Minor improvement to English fluency

Fixed some unusual phrasing I saw while reading the docs. 
Goal is to leave things even better than I found them.
diff --git a/content/apt/guides/mini/guide-3rd-party-jars-local.apt b/content/apt/guides/mini/guide-3rd-party-jars-local.apt
index f34bf3b..4c42476 100644
--- a/content/apt/guides/mini/guide-3rd-party-jars-local.apt
+++ b/content/apt/guides/mini/guide-3rd-party-jars-local.apt
@@ -29,7 +29,7 @@
 
 Guide to installing 3rd party JARs
 
- Although rarely, but sometimes, you will have 3rd party JARs that you need to put in your local repository for use in your
+ Occasionally, you will have 3rd party JARs that you need to put in your local repository for use in your
  builds, since they don't exist in any public repository like {{{https://search.maven.org}Maven Central}}. 
  The JARs must be placed in the local repository in the correct place in order for it to be correctly
  picked up by Apache Maven.