documentation: dev-manual - Wording changes for bumping PR

I edited the patch from Paul a bit here to conform to
the style of writing plus to make things clearer.

(From yocto-docs rev: 87abf857cfcd8a0d78a48322fbe9ac5395b6ad30)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index 8d053b3f53..96def5895f 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -1538,11 +1538,11 @@
             <filename><ulink url='&YOCTO_DOCS_REF_URL;#var-PR'>PR</ulink></filename> 
             variable needs to be increased 
             (or "bumped") as part of that commit. 
-            This means that for new recipes you must be sure to add the <filename>PR</filename>
-            variable and set its initial value equal to "r0".  
-            Failing to define <filename>PR</filename> makes it easy to miss when you bump a package.
-            Note that you can only use integer values following the "r" in the 
-            <filename>PR</filename> variable.
+            For new recipes you should add the <filename>PR</filename>
+            variable and set its initial value equal to "r0", which is the default.  
+            Even though the default value is "r0", the practice of adding it to a new recipe makes 
+            it harder to forget to bump the variable when you make changes 
+            to the recipe in future.
         </para>
 
         <para>