refs #10019 - update maven central URLs (3.0.0)

Author: frantuma

README.md

@@ -156,12 +156,12 @@ Swagger Codegen Version    | Release Date | OpenAPI Spec compatibility | Notes
 If you're looking for the latest stable version, you can grab it directly from Maven.org (Java 8 runtime at a minimum):
 
 ```sh
-wget http://central.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.16/swagger-codegen-cli-3.0.16.jar -O swagger-codegen-cli.jar
+wget https://repo1.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.16/swagger-codegen-cli-3.0.16.jar -O swagger-codegen-cli.jar
 
 java -jar swagger-codegen-cli.jar --help
 ```
 
-For Windows users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g. `Invoke-WebRequest -OutFile swagger-codegen-cli.jar http://central.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.16/swagger-codegen-cli-3.0.16.jar`
+For Windows users, you will need to install [wget](http://gnuwin32.sourceforge.net/packages/wget.htm) or you can use Invoke-WebRequest in PowerShell (3.0+), e.g. `Invoke-WebRequest -OutFile swagger-codegen-cli.jar https://repo1.maven.org/maven2/io/swagger/codegen/v3/swagger-codegen-cli/3.0.16/swagger-codegen-cli-3.0.16.jar`
 
 On a mac, it's even easier with `brew`:
 ```sh
@@ -337,7 +337,7 @@ java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate \
 ```
 (if you're on Windows, replace the last command with `java -jar modules\swagger-codegen-cli\target\swagger-codegen-cli.jar generate -i http://petstore.swagger.io/v2/swagger.json -l php -o c:\temp\php_api_client`)
 
-You can also download the JAR (latest release) directly from [maven.org](http://central.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.0/swagger-codegen-cli-2.3.0.jar)
+You can also download the JAR (latest release) directly from [maven.org](https://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/2.3.0/swagger-codegen-cli-2.3.0.jar)
 
 To get a list of **general** options available, please run `java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar help generate`