Merge pull request #1798 from pbeesley-arm/pb/fix-code-style

doc: Fix broken code blocks in coding guidelines
diff --git a/docs/coding-guidelines.rst b/docs/coding-guidelines.rst
index 5a30e91..d5ac978 100644
--- a/docs/coding-guidelines.rst
+++ b/docs/coding-guidelines.rst
@@ -72,6 +72,7 @@
 
 The example below illustrates the ordering rules using some contrived header
 file names; this type of name reuse should be otherwise avoided.
+
 .. code:: c
 
   #include <string.h>
@@ -98,6 +99,7 @@
 is including them, use the ``<...>`` variant.
 
 Example (bl1_fwu.c):
+
 .. code:: c
 
   #include <assert.h>
@@ -114,6 +116,7 @@
 particular for the file ``platform_def.h``.
 
 Example:
+
 .. code:: c
 
   PLAT_INCLUDES  += -Iinclude/plat/myplat/include