Brought warning to high priority

Update functions.rst

Update for warning over note priority

Updated units-and-global-variables.rst

Updated file for warning over note priority

Updated control-structures.rst

Updated priority of warning over note

Updated assembly.rst

Updated priority of warning over code

Updated introduction-to-smart-contracts.rst

Updated priority of warning over note

Update installing-solidity.rst

Corrected control-structures.rst

Corrected white space error

Corrected whitespace

Corrected whitespace introduction to smart contract

docs/installing-solidity.rst

@@ -298,16 +298,16 @@ You might want to install ccache to speed up repeated builds.
 CMake will pick it up automatically.
 Building Solidity is quite similar on Linux, macOS and other Unices:
 
+.. warning::
+
+    BSD builds should work, but are untested by the Solidity team.
+
 .. code-block:: bash
 
     mkdir build
     cd build
     cmake .. && make
 
-.. warning::
-
-    BSD builds should work, but are untested by the Solidity team.
-
 or even easier on Linux and macOS, you can run:
 
 .. code-block:: bash