docs: Minor fix

git-svn-id: http://pugixml.googlecode.com/svn/trunk@772 99668b35-9821-0410-8761-19e4c4f06640

docs/manual.qbk

@@ -84,7 +84,7 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 ]
 
-This means that you can freely use pugixml in your applications, both open-source and proprietary. If you use pugixml in a product, it is sufficient, but not strictly necessary, to add an acknowledgment like this to the product distribution:
+This means that you can freely use pugixml in your applications, both open-source and proprietary. If you use pugixml in a product, it is sufficient to add an acknowledgment like this to the product distribution:
  
 [:
 This software is based on pugixml library (http://pugixml.org).'''<sbr />'''

docs/quickstart.qbk

@@ -248,7 +248,7 @@ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 ]
 
-This means that you can freely use pugixml in your applications, both open-source and proprietary. If you use pugixml in a product, it is sufficient, but not strictly necessary, to add an acknowledgment like this to the product distribution:
+This means that you can freely use pugixml in your applications, both open-source and proprietary. If you use pugixml in a product, it is sufficient to add an acknowledgment like this to the product distribution:
  
 [:
 This software is based on pugixml library (http://pugixml.org).'''<sbr />'''