fix(docs): correct windows filename to end in .zip in release notes

Author: YOU54F

packaging/RELEASE_NOTES.md.template

@@ -47,14 +47,14 @@ tar xzf pact-<PACKAGE_VERSION>-linux-arm64.tar.gz
 #### x86_64
 
 ```
-curl -LO https://github.com/pact-foundation/pact-ruby-standalone/releases/download/<TAG_NAME>/pact-<PACKAGE_VERSION>-windows-x86_64.tar.gz
-unzip pact-<PACKAGE_VERSION>-windows-x86_64.tar.gz
+curl -LO https://github.com/pact-foundation/pact-ruby-standalone/releases/download/<TAG_NAME>/pact-<PACKAGE_VERSION>-windows-x86_64.zip
+unzip pact-<PACKAGE_VERSION>-windows-x86_64.zip
 ```
 
 #### x86
 
 ```
-curl -LO https://github.com/pact-foundation/pact-ruby-standalone/releases/download/<TAG_NAME>/pact-<PACKAGE_VERSION>-windows-x86.tar.gz
-unzip pact-<PACKAGE_VERSION>-windows-x86.tar.gz
+curl -LO https://github.com/pact-foundation/pact-ruby-standalone/releases/download/<TAG_NAME>/pact-<PACKAGE_VERSION>-windows-x86.zip
+unzip pact-<PACKAGE_VERSION>-windows-x86.zip
 ```