Changed the links to CHANGELOG to feature branches

Author: spmallette

book/Section-Introduction.adoc

@@ -350,7 +350,7 @@ a number of point releases followed.
 
 NOTE: Full details of all the new features added in the TinkerPop 3.4.x releases can 
 be found at the following link:
-https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc#tinkerpop-340-avant-gremlin-construction-3-for-theremin-and-flowers
+https://github.com/apache/tinkerpop/blob/3.4-dev/CHANGELOG.asciidoc
 
 [[tp35intro]]
 ==== TinkerPop 3.5
@@ -375,7 +375,7 @@ strings.
 
 NOTE: Full details of all the new features added in the TinkerPop 3.5.x releases can
 be found at the following link:
-https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc#tinkerpop-350-the-sleeping-gremlin-no-18-entracte-symphonique
+https://github.com/apache/tinkerpop/blob/3.5-dev/CHANGELOG.asciidoc
 
 [[tp36intro]]
 ==== TinkerPop 3.6
@@ -409,7 +409,7 @@ completed as of TinkerPop 3.6.0.
 
 NOTE: Full details of all the new features added in the TinkerPop 3.6.x releases can 
 be found at the following link:
-https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc#tinkerpop-360-tinkerheart
+https://github.com/apache/tinkerpop/blob/3.6-dev/CHANGELOG.asciidoc
 
 [[tp37intro]]
 ==== TinkerPop 3.7
@@ -437,7 +437,7 @@ with their properties attached using the 'materializeProperties' option.
 
 NOTE: Full details of all the new features added in the TinkerPop 3.7.x releases can 
 be found at the following link:
-https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc#tinkerpop-370-gremfir-master-of-the-pan-flute
+https://github.com/apache/tinkerpop/blob/3.7-dev/CHANGELOG.asciidoc
 
 [[tp38intro]]
 ==== TinkerPop 3.8
@@ -486,7 +486,7 @@ automatically unwrap a single item in a list if there is only one object present
 
 NOTE: Full details of all the new features added in the TinkerPop 3.8.x releases can 
 be found at the following link:
-https://github.com/apache/tinkerpop/blob/master/CHANGELOG.asciidoc#tinkerpop-380-not-officially-named-yet
+https://github.com/apache/tinkerpop/blob/3.8-dev/CHANGELOG.asciidoc
 
 [[tp40intro]]
 ==== TinkerPop 4.0