Improve JDT docs, #2227.

Author: nedtwigg

plugin-gradle/README.md

@@ -227,7 +227,7 @@ spotless {
 
 ### eclipse jdt
 
-[homepage](https://www.eclipse.org/downloads/packages/). [compatible versions](https://github.com/diffplug/spotless/tree/main/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_jdt_formatter). See [here](../ECLIPSE_SCREENSHOTS.md) for screenshots that demonstrate how to get and install the config file mentioned below.
+[homepage](https://download.eclipse.org/eclipse/downloads/). See [here](../ECLIPSE_SCREENSHOTS.md) for screenshots that demonstrate how to get and install the config file mentioned below.
 
 ```gradle
 spotless {

plugin-maven/README.md

@@ -255,7 +255,7 @@ any other maven phase (i.e. compile) then it can be configured as below;
 
 ### eclipse jdt
 
-[homepage](https://www.eclipse.org/downloads/packages/). [compatible versions](https://github.com/diffplug/spotless/tree/main/lib-extra/src/main/resources/com/diffplug/spotless/extra/eclipse_jdt_formatter). [code](https://github.com/diffplug/spotless/blob/main/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/Eclipse.java). See [here](../ECLIPSE_SCREENSHOTS.md) for screenshots that demonstrate how to get and install the config file mentioned below.
+[homepage](https://download.eclipse.org/eclipse/downloads/). [code](https://github.com/diffplug/spotless/blob/main/plugin-maven/src/main/java/com/diffplug/spotless/maven/java/Eclipse.java). See [here](../ECLIPSE_SCREENSHOTS.md) for screenshots that demonstrate how to get and install the config file mentioned below.
 
 ```xml
 <eclipse>