Make SingleLine guidance second.

Author: costdev

src/Standards/Squiz/Docs/Commenting/BlockCommentStandard.xml

@@ -41,6 +41,25 @@
     </code_comparison>
     <standard>
     <![CDATA[
+    Single line block comments are not allowed.
+    ]]>
+    </standard>
+    <code_comparison>
+        <code title="Valid: Multi-line block comment.">
+        <![CDATA[
+/*
+    A block comment.
+*/
+        ]]>
+        </code>
+        <code title="Invalid: Single line block comment.">
+        <![CDATA[
+<em>/* A block comment. */</em>
+        ]]>
+        </code>
+    </code_comparison>
+    <standard>
+    <![CDATA[
     If there are no asterisks at the start of each line, the contents of the docblock should be indented by at least 4 spaces.
     ]]>
     </standard>
@@ -112,25 +131,6 @@
     </code_comparison>
     <standard>
     <![CDATA[
-    Single line block comments are not allowed.
-    ]]>
-    </standard>
-    <code_comparison>
-        <code title="Valid: Multi-line block comment.">
-        <![CDATA[
-/*
-    A block comment.
-*/
-        ]]>
-        </code>
-        <code title="Invalid: Single line block comment.">
-        <![CDATA[
-<em>/* A block comment. */</em>
-        ]]>
-        </code>
-    </code_comparison>
-    <standard>
-    <![CDATA[
     Block comment text should start on a new line immediately after the opener.
     ]]>
     </standard>