Fix wrong javadoc tags

'@' in javadocs must be encoded as '{@literal @}'.

Signed-off-by: Edwin Kempin <ekempin@google.com>
Change-Id: I41a86b3ca570dbd11a06d66af68d096d52a41d2f

java/com/google/gerrit/server/DynamicOptions.java

diff --git a/java/com/google/gerrit/server/DynamicOptions.java b/java/com/google/gerrit/server/DynamicOptions.java
index 44d3493..41dc082 100644
--- a/java/com/google/gerrit/server/DynamicOptions.java
+++ b/java/com/google/gerrit/server/DynamicOptions.java
@@ -80,7 +80,7 @@
    *       .to(MyOptionsClassNameProvider.class);
    *
    *   static class MyOptionsClassNameProvider implements DynamicOptions.ClassNameProvider {
-   *     @Override
+   *     {@literal @}Override
    *     public String getClassName() {
    *       return "com.googlesource.gerrit.plugins.myplugin.CommandOptions";
    *     }
@@ -107,11 +107,11 @@
    *       .to(MyOptionsModulesClassNamesProvider.class);
    *
    *   static class MyOptionsModulesClassNamesProvider implements DynamicOptions.ClassNameProvider {
-   *     @Override
+   *     {@literal @}Override
    *     public String getClassName() {
    *       return "com.googlesource.gerrit.plugins.myplugin.CommandOptions";
    *     }
-   *     @Override
+   *     {@literal @}Override
    *     public Iterable<String> getModulesClassNames()() {
    *       return "com.googlesource.gerrit.plugins.myplugin.MyOptionsModule";
    *     }

java/com/google/gerrit/server/permissions/PermissionBackend.java

diff --git a/java/com/google/gerrit/server/permissions/PermissionBackend.java b/java/com/google/gerrit/server/permissions/PermissionBackend.java
index d831ab6..8ee0fee 100644
--- a/java/com/google/gerrit/server/permissions/PermissionBackend.java
+++ b/java/com/google/gerrit/server/permissions/PermissionBackend.java
@@ -70,7 +70,7 @@
  *   private final PermissionBackend permissions;
  *   private final Provider<CurrentUser> user;
  *
- *   @Inject
+ *   {@literal @}Inject
  *   Foo(PermissionBackend permissions, Provider<CurrentUser> user) {
  *     this.permissions = permissions;
  *     this.user = user;