Reduce indentation of xml snippets

Author: barchetta

docs/src/main/asciidoc/se/guides/logging.adoc

@@ -84,22 +84,22 @@ To use `log4j` with your Helidon application add the following dependencies:
 
 [source]
 ----
-        <dependency>
-            <groupId>io.helidon.logging</groupId>
-            <artifactId>helidon-logging-log4j</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-api</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-core</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-jul</artifactId>
-        </dependency>
+<dependency>
+    <groupId>io.helidon.logging</groupId>
+    <artifactId>helidon-logging-log4j</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.apache.logging.log4j</groupId>
+    <artifactId>log4j-api</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.apache.logging.log4j</groupId>
+    <artifactId>log4j-core</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.apache.logging.log4j</groupId>
+    <artifactId>log4j-jul</artifactId>
+</dependency>
 ----
 
 This achieves four things:
@@ -117,23 +117,23 @@ To use `slf4j` with your Helidon application add the following dependencies:
 
 [source]
 ----
-        <dependency>
-            <groupId>io.helidon.logging</groupId>
-            <artifactId>helidon-logging-slf4j</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-api</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>jul-to-slf4j</artifactId>
-        </dependency>
-        <dependency>
-            <groupId>ch.qos.logback</groupId>
-            <artifactId>logback-classic</artifactId>
-            <version>${version.lib.logback}</version>
-        </dependency>
+<dependency>
+    <groupId>io.helidon.logging</groupId>
+    <artifactId>helidon-logging-slf4j</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.slf4j</groupId>
+    <artifactId>slf4j-api</artifactId>
+</dependency>
+<dependency>
+    <groupId>org.slf4j</groupId>
+    <artifactId>jul-to-slf4j</artifactId>
+</dependency>
+<dependency>
+    <groupId>ch.qos.logback</groupId>
+    <artifactId>logback-classic</artifactId>
+    <version>${version.lib.logback}</version>
+</dependency>
 ----
 
 The above snippet uses logback as the slf4j logging provider.