docs/manual: slightly compactify a paragraph

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

docs/manual/adding-packages-directory.txt

@@ -39,12 +39,11 @@ itself should be indented with one tab and two spaces, lines should
 not be longer than 72 columns, and it must mention the upstream URL
 of the project.
 
-You can add other sub-options into a +if
-BR2_PACKAGE_LIBFOO...endif+ statement to configure particular things
-in your software. You can look at examples in other packages. The
-syntax of the +Config.in+ file is the same as the one for the kernel
-Kconfig file. The documentation for this syntax is available at
-http://kernel.org/doc/Documentation/kbuild/kconfig-language.txt[]
+You can add other sub-options into a +if BR2_PACKAGE_LIBFOO...endif+
+statement to configure particular things in your software. You can look at
+examples in other packages. The syntax of the +Config.in+ file is the same
+as the one for the kernel Kconfig file. The documentation for this syntax is
+available at http://kernel.org/doc/Documentation/kbuild/kconfig-language.txt[]
 
 Finally you have to add your new +libfoo/Config.in+ to
 +package/Config.in+ (or in a category subdirectory if you decided to