Update project URL in nuspec.

Author: StephenMolloy

src/packages/ConfigurationBuilders.Azure.nupkg/Microsoft.Configuration.ConfigurationBuilders.Azure.nuspec

@@ -10,7 +10,7 @@
     <description>A set of Configuration Builders for the .Net Desktop Framework that draw from Azure resources.</description>
     <summary>A set of Configuration Builders for the .Net Desktop Framework that draw from Azure resources.</summary>
     <language>en-US</language>
-    <projectUrl>http://www.asp.net/</projectUrl>
+    <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <licenseUrl>http://www.microsoft.com/web/webpi/eula/net_library_eula_ENU.htm</licenseUrl>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders Azure</tags>

src/packages/ConfigurationBuilders.Base.nupkg/Microsoft.Configuration.ConfigurationBuilders.Base.nuspec

@@ -10,7 +10,7 @@
     <description>In .Net 4.7.1, the configuration system allows applications to use ConfigurationBuilders to build up and modify configuration at runtime when it is loaded. This package provides a base framework to ease development of simple key/value configuration builders.</description>
     <summary>A base framework for simple key/value Configuration Builders for the .Net Desktop Framework.</summary>
     <language>en-US</language>
-    <projectUrl>http://www.asp.net/</projectUrl>
+    <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <licenseUrl>http://www.microsoft.com/web/webpi/eula/net_library_eula_ENU.htm</licenseUrl>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders</tags>

src/packages/ConfigurationBuilders.Environment.nupkg/Microsoft.Configuration.ConfigurationBuilders.Environment.nuspec

@@ -10,7 +10,7 @@
     <description>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from environment variables.</description>
     <summary>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from environment variables.</summary>
     <language>en-US</language>
-    <projectUrl>http://www.asp.net/</projectUrl>
+    <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <licenseUrl>http://www.microsoft.com/web/webpi/eula/net_library_eula_ENU.htm</licenseUrl>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders - Environment</tags>

src/packages/ConfigurationBuilders.Json.nupkg/Microsoft.Configuration.ConfigurationBuilders.Json.nuspec

@@ -10,7 +10,7 @@
     <description>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from a json file.</description>
     <summary>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from a json file.</summary>
     <language>en-US</language>
-    <projectUrl>http://www.asp.net/</projectUrl>
+    <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <licenseUrl>http://www.microsoft.com/web/webpi/eula/net_library_eula_ENU.htm</licenseUrl>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders Json</tags>

src/packages/ConfigurationBuilders.UserSecrets.nupkg/Microsoft.Configuration.ConfigurationBuilders.UserSecrets.nuspec

@@ -10,7 +10,7 @@
     <description>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from a a 'secrets' file outside of source control.</description>
     <summary>A simple key/value Configuration Builder for the .Net Desktop Framework that draws from a a 'secrets' file outside of source control.</summary>
     <language>en-US</language>
-    <projectUrl>http://www.asp.net/</projectUrl>
+    <projectUrl>https://github.com/aspnet/MicrosoftConfigurationBuilders</projectUrl>
     <licenseUrl>http://www.microsoft.com/web/webpi/eula/net_library_eula_ENU.htm</licenseUrl>
     <requireLicenseAcceptance>true</requireLicenseAcceptance>
     <tags>Microsoft Configuration Builders</tags>