Use code blocks for command line instructions

The current format of the build file is quite illegible and poses difficulties for developers trying to quickly build.

This commit helps resolve this by making it easier to simply copy the commands while also fixing legibility.

Author: Doomsdayrs

BUILD.md

@@ -38,7 +38,7 @@ The Release and Debug builds of RRA will be available in the build/release and b
 
 ### Building on Ubuntu
 Required dependencies can be installed as follows:
-
+```bash
 sudo apt-get update
 sudo apt-get install build-essential python3 chrpath
 sudo apt-get install python3-pip
@@ -49,7 +49,7 @@ sudo apt-get install git-lfs
 sudo apt-get install python3-sphinx
 sudo apt-get install libxcb-xinerama0
 sudo apt-get install mesa-common-dev libglu1-mesa-dev
-
+```
 Qt V5.15.2 can be installed using the Qt online installer available from the Qt 5.15.2 release page here: https://www.qt.io/blog/qt-5.15.2-released
 As an alternative, the Qt 5.12.6 offline installer can be used here: https://download.qt.io/archive/qt/5.12/5.12.6/ (the .run file) and installed
 to ~/Qt/Qt5.12.6 (the default of ~/Qt5.12.6 will not work).
@@ -61,23 +61,24 @@ the libraries in the post build step. If needed, the XCB library files (libxcb*)
 Suite download found at https://gpuopen.com/tools/.
 
 Run the python pre_build.py in the build folder.
-
-$ python3 pre_build.py
-
+```bash
+python3 pre_build.py
+```
 Or run the pre_build.py script with the -qt option to specify another version of Qt (also use the --disable-extra-qt-lib-deploy flag since the XCB
 libraries aren't needed). For example:
-
-$ python3 pre_build.py --qt 5.12.6 --disable-extra-qt-lib-deploy
-
+```bash
+python3 pre_build.py --qt 5.12.6 --disable-extra-qt-lib-deploy
+```
 The pre_build.py script will construct the output folders and build the necessary makefiles.
 To build the release build, use:
-
-$ make -j5 -C linux/make/release
-
+```bash
+make -j5 -C linux/make/release
+```
 Similarly for the debug build, use:
-
-$ make -j5 -C linux/make/debug
-
+```bash
+make -j5 -C linux/make/debug
+```
 Alternatively, building can be done directly from the prebuild script with the --build option
-
-$ python3 pre_build.py --build
+```bash
+python3 pre_build.py --build
+```