Fix list indentation

docs/control-structures.rst

@@ -399,6 +399,7 @@ Currently, Solidity automatically generates a runtime exception in the following
 #. If you call ``assert`` with an argument that evaluates to false.
 
 While a user-provided exception is generated in the following situations:
+
 #. Calling ``throw``.
 #. Calling ``require`` with an argument that evaluates to ``false``.
 
@@ -411,4 +412,4 @@ did not occur. Because we want to retain the atomicity of transactions, the safe
 
 If contracts are written so that ``assert`` is only used to test internal conditions and ``require``
 is used in case of malformed input, a formal analysis tool that verifies that the invalid
-opcode can never be reached can be used to check for the absence of errors assuming valid inputs.
+opcode can never be reached can be used to check for the absence of errors assuming valid inputs.