STYLE: fix spelling errors in travis build script

Utilities/Maintenance/TravisBuild.sh

@@ -27,8 +27,8 @@ CMAKE_FILE=$CTEST_DASHBOARD_ROOT/orfeotoolbox/OTB/CMakeLists.txt
 VERSION_MAJOR=$(sed -n  '/set.OTB_VERSION_MAJOR/p' $CMAKE_FILE|cut -d '"' -f 2)
 VERSION_MINOR=$(sed -n  '/set.OTB_VERSION_MINOR/p' $CMAKE_FILE|cut -d '"' -f 2)
 VERSION_PATCH=$(sed -n  '/set.OTB_VERSION_PATCH/p' $CMAKE_FILE|cut -d '"' -f 2)
-OTB_VERSION="$VERSION_MAJOR.$VERION_MINOR"
-OTB_VERSION_FULL="$VERSION_MAJOR.$VERION_MINOR.$VERION_PATCH"
+OTB_VERSION="$VERSION_MAJOR.$VERSION_MINOR"
+OTB_VERSION_FULL="$VERSION_MAJOR.$VERSION_MINOR.$VERION_PATCH"
 
 XDK_FILE=OTB-$OTB_VERSION_FULL-xdk-Linux64.run
 CMAKE_PREFIX_PATH=/tmp/OTB-$OTB_VERSION_FULL-xdk-Linux64