Merge pull request #18374 from dreis2211

* pr/18374:
  Simplify pipe escaping for reference doc tables
  Avoid need to escape pipe character in reference tables

Closes gh-18374

Author: philwebb

spring-boot-project/spring-boot-tools/spring-boot-configuration-docs/src/main/java/org/springframework/boot/configurationdocs/SingleConfigurationTableEntry.java

@@ -62,7 +62,7 @@ void write(AsciidocBuilder builder) {
 
 	private void writeDefaultValue(AsciidocBuilder builder) {
 		String defaultValue = (this.defaultValue != null) ? this.defaultValue : "";
-		defaultValue = defaultValue.replace("\\", "\\\\").replace("|", "{vbar}" + System.lineSeparator());
+		defaultValue = defaultValue.replace("\\", "\\\\").replace("|", "\\|");
 		if (defaultValue.isEmpty()) {
 			builder.appendln("|");
 		}

spring-boot-project/spring-boot-tools/spring-boot-configuration-docs/src/test/java/org/springframework/boot/configurationdocs/SingleConfigurationTableEntryTests.java

@@ -68,8 +68,8 @@ void defaultValueWithPipes() {
 		SingleConfigurationTableEntry entry = new SingleConfigurationTableEntry(property);
 		AsciidocBuilder builder = new AsciidocBuilder();
 		entry.write(builder);
-		assertThat(builder.toString()).isEqualTo("|`+spring.test.prop+`" + NEWLINE + "|`+first{vbar}" + NEWLINE
-				+ "second+`" + NEWLINE + "|+++This is a description.+++" + NEWLINE);
+		assertThat(builder.toString()).isEqualTo("|`+spring.test.prop+`" + NEWLINE + "|`+first\\|second+`" + NEWLINE
+				+ "|+++This is a description.+++" + NEWLINE);
 	}
 
 	@Test