Update AJDT update site URLs after project termination

AJDT is now part of the AspectJ project. Hence, both repository and
download area have moved to other URLs. See also:
https://gitlab.eclipse.org/eclipsefdn/emo-team/emo/-/issues/475#note_1612124

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

docs/developer/IDE.md

@@ -32,18 +32,18 @@ projects using AspectJ Maven Plugin.
 #### AspectJ Development Tools (AJDT)
 
 Use an update site corresponding to your Eclipse version (minimal version listed):
-* Eclipse 2023-12 (4.30), AspectJ 1.9.21, Java 21: https://download.eclipse.org/tools/ajdt/430/dev/update<br>
+* Eclipse 2023-12 (4.30), AspectJ 1.9.21, Java 21: https://download.eclipse.org/tools/aspectj/ajdt/430/dev/update<br>
   **Please note:** In Eclipse 2023-12, you should also add
   https://download.eclipse.org/eclipse/updates/4.31-I-builds/I20231201-1800/ in addition to the regular release update
   sites https://download.eclipse.org/eclipse/updates/4.30/ or https://download.eclipse.org/releases/latest. This is,
   because AspectJ 1.9.21 contains support for JDK 21 string templates, which was added to the compiler after the 2023-12
   release, but also includes a few Eclipse API changes requiring the additional update site. After adding it, please
   make sure to call _Help_ → _Check for Updates_ and accept the updates.
-* Eclipse 2022-12 (4.26), AspectJ 1.9.19, Java 19: https://download.eclipse.org/tools/ajdt/426/dev/update
-* Eclipse 2022-03 (4.23), AspectJ 1.9.19, Java 19: https://download.eclipse.org/tools/ajdt/423/dev/update
-* Eclipse 2021-09 (4.21), AspectJ 1.9.8, Java 17: https://download.eclipse.org/tools/ajdt/421/dev/update
-* Eclipse 2021-03 (4.19), AspectJ 1.9.7, Java 16: https://download.eclipse.org/tools/ajdt/419/dev/update
-* Eclipse 2018-12 (4.10), AspectJ 1.9.6, Java 14: https://download.eclipse.org/tools/ajdt/410/dev/update
+* Eclipse 2022-12 (4.26), AspectJ 1.9.19, Java 19: https://download.eclipse.org/tools/aspectj/ajdt/426/dev/update
+* Eclipse 2022-03 (4.23), AspectJ 1.9.19, Java 19: https://download.eclipse.org/tools/aspectj/ajdt/423/dev/update
+* Eclipse 2021-09 (4.21), AspectJ 1.9.8, Java 17: https://download.eclipse.org/tools/aspectj/ajdt/421/dev/update
+* Eclipse 2021-03 (4.19), AspectJ 1.9.7, Java 16: https://download.eclipse.org/tools/aspectj/ajdt/419/dev/update
+* Eclipse 2018-12 (4.10), AspectJ 1.9.6, Java 14: https://download.eclipse.org/tools/aspectj/ajdt/410/dev/update
 * For older versions, please refer to https://www.eclipse.org/ajdt/downloads (page was not updated in a long time,
   and I have no write access).