Fix a formatting issue.

Readme.txt

@@ -299,12 +299,12 @@ Desktop build described above.
 For cross-compiling build on another build/host machine, firstly set the
 RASPI_TOOL environment variable to point to your Raspberry Pi Cross-Compiling
 tool where all the arm-linux-gnueabihf-* executables are located. You can setup
-the tool using <a href="http://crosstool-ng.org/">crosstool-NG</a> or just
-download one from https://github.com/raspberrypi/tools. Secondly, set the
-RASPI_ROOT environment variable to point to your Raspbian or Pidora system root.
-You must install the Urho3D prerequisites software development packages for
-Raspberry Pi (see "Building_Prerequisites") in the system root before attempting
-to do the Urho3D cross-compiling build.
+the tool using crosstool-NG (http://crosstool-ng.org/) or just download one
+from https://github.com/raspberrypi/tools. Secondly, set the RASPI_ROOT
+environment variable to point to your Raspbian or Pidora system root. You must
+install the Urho3D prerequisites software development packages for Raspberry Pi
+(see "Building_Prerequisites") in the system root before attempting to do the
+Urho3D cross-compiling build.
 
 When running cmake_gcc.sh with RASPI_TOOL environment variable set, it tells
 build script to generate additional raspi-Build directory for cross-compiling.