Editing pass for the Spring Framework Reference Guide

I edited for spelling, punctuation, grammar, usage, and corporate voice. I also added cross-references and links to the Javadoc in a number of places.

src/docs/asciidoc/core.adoc

@@ -7,18 +7,18 @@
 :tabsize: 4
 :docinfo1:
 
-This part of the reference documentation covers all of those technologies that are
+This part of the reference documentation covers all the technologies that are
 absolutely integral to the Spring Framework.
 
 Foremost amongst these is the Spring Framework's Inversion of Control (IoC) container. A
 thorough treatment of the Spring Framework's IoC container is closely followed by
 comprehensive coverage of Spring's Aspect-Oriented Programming (AOP) technologies. The
-Spring Framework has its own AOP framework, which is conceptually easy to understand,
+Spring Framework has its own AOP framework, which is conceptually easy to understand
 and which successfully addresses the 80% sweet spot of AOP requirements in Java
 enterprise programming.
 
-Coverage of Spring's integration with AspectJ (currently the richest - in terms of
-features - and certainly most mature AOP implementation in the Java enterprise space) is
+Coverage of Spring's integration with AspectJ (currently the richest -- in terms of
+features -- and certainly most mature AOP implementation in the Java enterprise space) is
 also provided.
 
 include::core/core-beans.adoc[leveloffset=+1]

src/docs/asciidoc/index.adoc

@@ -4,9 +4,9 @@
 
 Welcome to the Spring Framework reference documentation!
 
-Please read the <<overview.adoc#overview,*Overview*>> for a quick introduction including brief history,
+Please read the <<overview.adoc#overview,*Overview*>> for a quick introduction, including a brief history,
 design philosophy, where to ask questions, and tips to get started. For information on
-"What's New", or "Migrating from previous versions", check the
+"`What's New`", or "`Migrating from previous versions`", check the
 https://github.com/spring-projects/spring-framework/wiki[*Github Wiki*].
 
 The reference documentation is divided into several sections: