Update BUILD.md

Fix git clone command instruction

Author: mcleary

BUILD.md

@@ -19,7 +19,7 @@ CodeXL Build Instructions
 ### Building CodeXL on Windows
 * Download and install the required software as listed in [Prerequisites](#prerequisites).
 * Clone the LPGPU<sup>2</sup> CodeXL repository.
-    * `https://github.com/codeplaysoftware/LPGPU2-CodeXL.git`
+    * `git clone https://github.com/codeplaysoftware/LPGPU2-CodeXL.git`
 * Go to the folder `Common/Lib/Ext/ComputeCpp` and execute the script `SetupComputeCpp.bat`.
     - This will generate the file `ComputeCpp-Version.props`, which is required by the project `LPGPU2SyclInfo`.
 * **Optional**: Enabling build of CCVGCodeCoverage
@@ -120,4 +120,4 @@ The script must be run with root privileges and accepts the following arguments:
 
 ##### Important
 
-> Before attempting to compile CodeXL if not on a clean machine be sure to clean out any previous builds of CodeXL especially if you have tried to build CodeXL with a compiler other than GCC. Calling `buildCodeXLFullLinuxProjects -c` to clean the build is not enough to clear out previously built libraries or object files. Likely the files will be used and not rebuilt. Manually remove the `Output_x68_64` and recompile everything.
+> Before attempting to compile CodeXL if not on a clean machine be sure to clean out any previous builds of CodeXL especially if you have tried to build CodeXL with a compiler other than GCC. Calling `buildCodeXLFullLinuxProjects -c` to clean the build is not enough to clear out previously built libraries or object files. Likely the files will be used and not rebuilt. Manually remove the `Output_x68_64` and recompile everything.