chore: update var names and add missing docs (#223)

Signed-off-by: Chao Wang <[email protected]>

Author: soul2zimate

README.md

@@ -188,6 +188,8 @@ according to your preferences.
     * `EXHORT_DOCKER_PATH` : Specify the absolute path of `docker` executable.
     * `EXHORT_PODMAN_PATH` : Specify the absolute path of `podman` executable.
     * `EXHORT_IMAGE_PLATFORM` : Specify the platform used for multi-arch images.
+    * `EXHORT_MVN_USER_SETTINGS` : Specify the absolute path to the Maven user settings file.
+    * `EXHORT_MVN_LOCAL_REPO` : Specify the absolute path to the Maven local repository.
 
   ![ Animated screenshot showing the inline reporting feature of Image Analysis ](src/main/resources/images/image-analysis.gif)
 

src/main/java/org/jboss/tools/intellij/exhort/ApiService.java

@@ -149,16 +149,16 @@ private void setRequestProperties(final String manifestName) {
 
         String userSettingsFile = MavenSettingsUtil.getUserSettingsFile();
         if (!userSettingsFile.isBlank()) {
-            System.setProperty("EXHORT_MVN_USER_SETTINGS_FILE", userSettingsFile);
+            System.setProperty("EXHORT_MVN_USER_SETTINGS", userSettingsFile);
         } else {
-            System.clearProperty("EXHORT_MVN_USER_SETTINGS_FILE");
+            System.clearProperty("EXHORT_MVN_USER_SETTINGS");
         }
 
         String localRepository = MavenSettingsUtil.getLocalRepository();
         if (!localRepository.isBlank()) {
-            System.setProperty("EXHORT_MVN_LOCAL_REPOSITORY", localRepository);
+            System.setProperty("EXHORT_MVN_LOCAL_REPO", localRepository);
         } else {
-            System.clearProperty("EXHORT_MVN_LOCAL_REPOSITORY");
+            System.clearProperty("EXHORT_MVN_LOCAL_REPO");
         }
 
         if (settings.gradlePath != null && !settings.gradlePath.isBlank()) {