Refaster template compilation instructions are out of date or unclear

Following https://errorprone.info/docs/refaster I created a new file StringIsEmpty.java (in an empty directory) and ran:
```
$ wget http://repo1.maven.org/maven2/com/google/errorprone/error_prone_refaster/2.3.1/error_prone_refaster-2.3.1.jar
--2024-01-25 21:56:41-- http://repo1.maven.org/maven2/com/google/errorprone/error_prone_refaster/2.3.1/error_prone_refaster-2.3.1.jar
Resolving repo1.maven.org (repo1.maven.org)... 2a04:4e42:8d::209, 146.75.116.209
Connecting to repo1.maven.org (repo1.maven.org)|2a04:4e42:8d::209|:80... connected.
HTTP request sent, awaiting response... 501 HTTPS Required
2024-01-25 21:56:41 ERROR 501: HTTPS Required.

```
:arrow_right: This information is out of date the URL needs to have `https`

Then, I ran
```
$ javac -version
javac 17.0.8
$ javac \
-cp error_prone_refaster-2.3.1.jar \
"-Xplugin:RefasterRuleCompiler --out ${PWD}/myrule.refaster" \
StringIsEmpty.java
Exception in thread "main" java.lang.IllegalAccessError: class com.google.errorprone.refaster.RefasterRuleCompiler (in unnamed module @0x6b143ee9) cannot access class com.sun.tools.javac.api.BasicJavacTask (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.api to unnamed module @0x6b143ee9
at com.google.errorprone.refaster.RefasterRuleCompiler.init(RefasterRuleCompiler.java:51)
at jdk.compiler/com.sun.tools.javac.api.BasicJavacTask.initPlugin(BasicJavacTask.java:255)
at jdk.compiler/com.sun.tools.javac.api.BasicJavacTask.initPlugins(BasicJavacTask.java:229)
at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:292)
at jdk.compiler/com.sun.tools.javac.main.Main.compile(Main.java:176)
at jdk.compiler/com.sun.tools.javac.Main.compile(Main.java:64)
at jdk.compiler/com.sun.tools.javac.Main.main(Main.java:50)
```
:arrow_right: compile instructions are either out of date or not fool proof

A look at the [maven repo](https://repo1.maven.org/maven2/com/google/errorprone/error_prone_refaster/l) reveals that the current version is `2.24.1`, I get the same error however.

:arrow_right: error_prone_refaster version needs to be updated