[build] Fix a typo in BUILD.md openMVG#1384

BUILD.md

@@ -147,7 +147,7 @@ $ ./bootstrap-vcpkg.sh/bat
 
 Checking OpenMVG 3rd party dependencies by using VCPKG (configure your build triplet if needed see `--triplet`)
 ```shell
-$ ./vcpkg install cereal ceres eigen3 libjpeg-turbo libpng tiff 
+$ ./vcpkg install cereal ceres eigen3 libjpeg-turbo libpng tiff
 ```
 Note: If you want to use ceres with a sparse back end, please use one of this choice `ceres[cxsparse]` or `ceres[suitesparse]` or `ceres[eigensparse]`.
 
@@ -156,7 +156,7 @@ Checking out OpenMVG and build it
 $ git clone --recursive https://github.com/openMVG/openMVG.git
 $ mkdir openMVG_Build
 $ cd openMVG_Build
-$ cmake -DCMAKE_TOOLCHAIN_FILE=<VCPK_ROOT>/scripts/buildsystems/vcpkg.cmake ../openMVG/src/
+$ cmake -DCMAKE_TOOLCHAIN_FILE=<VCPKG_ROOT>/scripts/buildsystems/vcpkg.cmake ../openMVG/src/
 $ cmake --build .
 ```