Merge pull request #274 from zpearce

* gh-274:
  Fix typo in Maven Exclusion section of the reference docs

Closes gh-274

Author: wilkinsona

src/docs/asciidoc/index.adoc

@@ -753,7 +753,7 @@ supported when using the Kotlin DSL.
 [[maven-exclusions]]
 == Maven Exclusions
 
-While Gradle can consume dependencies described with a Maven pom file, Gradle doesn't not
+While Gradle can consume dependencies described with a Maven pom file, Gradle does not
 honour Maven's semantics when it is using the pom to build the dependency graph. A notable
 difference that results from this is in how exclusions are handled. This is best
 illustrated with an example.