fix typos

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9756 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

doc/INSTALL.t2t

@@ -60,7 +60,7 @@ Please visit http://qgis.org for information on joining our mailing lists
 and getting involved in the project further.
 
 /!\ ***Note to document writers:*** Please use this document as the central
-place for describing build procefures. Please do not remove this notice. 
+place for describing build procedures. Please do not remove this notice. 
 
 /!\ ***Note:*** This is a 'cut and paste' tutorial - in most cases you can
 simply copy the commands listed in codeblocks that look like this:
@@ -667,7 +667,7 @@ I suggest you press 'p' to accept the key permanently.
 == Configure the build ==
 
 CMake supports out of source build so we will create a 'build' dir for the
-build process . By convention I build my software into a dir called 'apps' in
+build process. By convention I build my software into a dir called 'apps' in
 my home directory. If you have the correct permissions you may want to build
 straight into your /Applications folder. The instructions below assume you are
 building into a pre-existing ${HOME}/apps directory ...
@@ -974,7 +974,7 @@ dpkg-buildpackage -us -us -b
 you can install them using ``apt-get`` and re-run the command.
 
 /!\ ***Note:*** If you have ``libqgis1-dev`` installed, you need to remove it first
-using ``dpkg -r libqgis1-dev``.  Otherwise ``dpkg-buildpackage`` will complain about at
+using ``dpkg -r libqgis1-dev``.  Otherwise ``dpkg-buildpackage`` will complain about a
 build conflict.
 
 The the packages are created in the parent directory (ie. one level up).