Java: Use Dotcom help links

Author: henrymercer

java/ql/integration-tests/all-platforms/java/diagnostics/multiple-candidate-builds/diagnostics.expected

@@ -1,5 +1,5 @@
 {
-  "markdownMessage": "Building using Maven was skipped because there were multiple sibling build directories containing build files: [./maven-project-1,./maven-project-2]. If you want to use one of these, please [manually supply a build command](https://docs.github.com/en/github-ae@latest/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
+  "markdownMessage": "Building using Maven was skipped because there were multiple sibling build directories containing build files: [./maven-project-1,./maven-project-2]. If you want to use one of these, please [manually supply a build command](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
   "severity": "warning",
   "source": {
     "extractorName": "java",
@@ -13,7 +13,7 @@
   }
 }
 {
-  "markdownMessage": "Could not identify a unique top-level project to build. [Supply a manual build command](https://docs.github.com/en/github-ae@latest/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
+  "markdownMessage": "Could not identify a unique top-level project to build. [Supply a manual build command](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
   "severity": "error",
   "source": {
     "extractorName": "java",

java/ql/integration-tests/all-platforms/java/diagnostics/no-build-system/diagnostics.expected

@@ -1,5 +1,5 @@
 {
-  "markdownMessage": "Could not find a Gradle, Maven or Ant top-level project to build. [Supply a manual build command](https://docs.github.com/en/github-ae@latest/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
+  "markdownMessage": "Could not find a Gradle, Maven or Ant top-level project to build. [Supply a manual build command](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language).",
   "severity": "error",
   "source": {
     "extractorName": "java",

java/ql/integration-tests/all-platforms/java/diagnostics/no-gradle-test-classes/diagnostics.expected

@@ -13,7 +13,7 @@
   }
 }
 {
-  "markdownMessage": "Gradle project does not define a `testClasses` goal. [Supply a manual build command](https://docs.github.com/en/github-ae@latest/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language) that builds the code that should be analyzed.\n\nRelevant output line: `org.gradle.execution.TaskSelectionException: Task 'testClasses' not found in root project 'no-gradle-test-classes'.`",
+  "markdownMessage": "Gradle project does not define a `testClasses` goal. [Supply a manual build command](https://docs.github.com/en/code-security/code-scanning/automatically-scanning-your-code-for-vulnerabilities-and-errors/configuring-the-codeql-workflow-for-compiled-languages#adding-build-steps-for-a-compiled-language) that builds the code that should be analyzed.\n\nRelevant output line: `org.gradle.execution.TaskSelectionException: Task 'testClasses' not found in root project 'no-gradle-test-classes'.`",
   "severity": "error",
   "source": {
     "extractorName": "java",