Fixes a typo in the JDK URL that would cause Bazel to warn "Unknown host: mirror.bazel.com"

Fixes a typo in the JDK URL that would cause Bazel to issue this warning:

```
WARNING: Download from https://mirror.bazel.com/openjdk/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7%2B10/OpenJDK11U-jdk_ppc64le_linux_hotspot_11.0.7_10.tar.gz failed: class com.google.devtools.build.lib.bazel.repository.downloader.UnrecoverableHttpException Unknown host: mirror.bazel.com
```

Closes #11708.

PiperOrigin-RevId: 320935368
diff --git a/src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE b/src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE
index 794a6f4..91823eb 100644
--- a/src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE
+++ b/src/main/java/com/google/devtools/build/lib/bazel/rules/java/jdk.WORKSPACE
@@ -125,7 +125,7 @@
     sha256 = "a417db0295b1f4b538ecbaf7c774f3a177fab9657a665940170936c0eca4e71a",
     strip_prefix = "jdk-11.0.7+10",
     urls = [
-        "https://mirror.bazel.com/openjdk/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7+10/OpenJDK11U-jdk_ppc64le_linux_hotspot_11.0.7_10.tar.gz",
+        "https://mirror.bazel.build/openjdk/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7+10/OpenJDK11U-jdk_ppc64le_linux_hotspot_11.0.7_10.tar.gz",
         "https://github.com/AdoptOpenJDK/openjdk11-binaries/releases/download/jdk-11.0.7+10/OpenJDK11U-jdk_ppc64le_linux_hotspot_11.0.7_10.tar.gz",
     ],
 )