fix: make XML formatter functional in example

example/BUILD.bazel

@@ -48,7 +48,10 @@ js_library(
 js_library(
     name = "prettierrc",
     srcs = ["prettier.config.cjs"],
-    deps = [":node_modules/prettier-plugin-sql"],
+    deps = [
+        ":node_modules/@prettier/plugin-xml",
+        ":node_modules/prettier-plugin-sql",
+    ],
 )
 
 # NB: this alias does NOT cause Bazel's Loading phase to load the tools/BUILD file.

example/checkstyle-suppressions.xml

@@ -1,9 +1,7 @@
-<?xml version="1.0"?>
-
+<?xml version="1.0" ?>
 <!DOCTYPE suppressions PUBLIC
-    "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
-    "https://checkstyle.org/dtds/suppressions_1_2.dtd">
-
+  "-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
+  "https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
     <suppress files="Bar.java" checks="UnusedImports" />
-</suppressions>
+</suppressions>

example/checkstyle.xml

@@ -1,19 +1,18 @@
-<?xml version="1.0"?>
-<!DOCTYPE module PUBLIC
-          "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
-          "https://checkstyle.org/dtds/configuration_1_3.dtd">
+<?xml version="1.0" ?>
+<!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+  "https://checkstyle.org/dtds/configuration_1_3.dtd">
 <module name="Checker">
 
   <module name="TreeWalker">
-    <module name="UnusedImports"/>
+    <module name="UnusedImports" />
   </module>
 
   <module name="LineLength">
-    <property name="max" value="20"/>
+    <property name="max" value="20" />
   </module>
 
   <module name="SuppressionFilter">
-    <property name="file" value="checkstyle-suppressions.xml"/>
+    <property name="file" value="checkstyle-suppressions.xml" />
   </module>
 
 </module>

example/ktlint-baseline.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8" ?>
 <baseline version="1.0">
     <file name="src/hello.kt">
         <error line="1" column="1" source="import-ordering" />

example/pmd.xml

@@ -1,8 +1,10 @@
-<?xml version="1.0"?>
-<ruleset name="pmd-ruleset"
+<?xml version="1.0" ?>
+<ruleset
+  name="pmd-ruleset"
   xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
+  xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 http://pmd.sourceforge.net/ruleset_2_0_0.xsd"
+>
 
   <description>Error</description>
 

example/prettier.config.cjs

@@ -3,7 +3,7 @@
  */
 const config = {
   tabWidth: 2,
-  plugins: [require("prettier-plugin-sql")],
+  plugins: [require("prettier-plugin-sql"), require("@prettier/plugin-xml")],
 };
 
 module.exports = config;

example/spotbugs-exclude.xml

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8" ?>
 <FindBugsFilter>
     <!-- Exclude all warnings for the Foo.readFile() method -->
     <Match>