Rename primary branch in site sources

Signed-off-by: Alex Nelson <[email protected]>

swid-builder/src/site/markdown/index.md.vm

@@ -18,4 +18,4 @@ The following dependency can be added to your POM to use this library.
 The [API documentation](apidocs/index.html) provides more details.
 
 
-The [source](https://github.com/usnistgov/swid-tools/tree/master/swid-builder/) can be found in the project's Github repo.
+The [source](https://github.com/usnistgov/swid-tools/tree/main/swid-builder/) can be found in the project's Github repo.

swid-maven-plugin/src/site/markdown/index.md.vm

@@ -10,13 +10,13 @@ Two generation capabilities are provided:
 - **Assembly SWID Generator:** A [container descriptor handler](http://maven.apache.org/plugins/maven-assembly-plugin/examples/single/using-container-descriptor-handlers.html) that supports generation of a SWID tag as a manifest of a Maven [Assembly](http://maven.apache.org/plugins/maven-assembly-plugin/). Maven assemblies are binary distributions of Java code archived using a number of popular archive formats.
 - **SWD Generation Mojo:** An experimental Maven mojo for building a SWID tag for use within a Java JAR file.
 
-The [source](https://github.com/usnistgov/swid-tools/tree/master/swid-maven-plugin/) for these capabilities can be found in the project's Github repo.
+The [source](https://github.com/usnistgov/swid-tools/tree/main/swid-maven-plugin/) for these capabilities can be found in the project's Github repo.
 
 $h2 The Assembly SWID Generator
 
 To generate a SWID tag as part of the execution of the Maven [Assembly](http://maven.apache.org/plugins/maven-assembly-plugin/) plugin, a couple configurations need to be made.
 
-The following example is the configuration used by the [swidval project](https://github.com/usnistgov/swid-tools/tree/master/swidval).
+The following example is the configuration used by the [swidval project](https://github.com/usnistgov/swid-tools/tree/main/swidval).
 
 First, the assembly descriptor needs to be configured to use the `swid-generator`. In the following example, the assembly descriptor located in `src/assembly/bin.xml` has the needed `<containerDescriptorHandler>` configured as follows:
 

swid-repo-client/src/site/markdown/index.md.vm

@@ -19,4 +19,4 @@ The following dependency can be added to your POM to use this library.
 
 The [API documentation](apidocs/index.html) provides more details.
 
-The [source](https://github.com/usnistgov/swid-tools/tree/master/swid-repo-client) can be found in the project's Github repo.
+The [source](https://github.com/usnistgov/swid-tools/tree/main/swid-repo-client) can be found in the project's Github repo.

swidval-webapp/src/site/markdown/index.md

@@ -4,4 +4,4 @@ A simple, proof of concept webapp that provides a SWID validation service that i
 
 This web application is a wrapper around the [SWIDVal](../swidval) tool, which can be deployed as a WAR file to a Java application server.
 
-The [source](https://github.com/usnistgov/swid-tools/tree/master/swidval-webapp) can be found in the project's Github repo.
+The [source](https://github.com/usnistgov/swid-tools/tree/main/swidval-webapp) can be found in the project's Github repo.

swidval/src/site/markdown/index.md.vm

@@ -7,7 +7,7 @@ Supports validating a SWID tag against the requirements defined by ISO/IEC 19770
 
 This project is implemented using the [Decima Framework][decima], which provides the validation capabilities used to perform the SWID tag validation.
 
-The [source](https://github.com/usnistgov/swid-tools/tree/master/swidval) can be found in the project's Github repo.
+The [source](https://github.com/usnistgov/swid-tools/tree/main/swidval) can be found in the project's Github repo.
 
 $h2 Use as a Command Line Tool