Change log: Fix indentation

2nd level list must be indented with 4 spaces

Change-Id: I68ab4820c335308cb200c1a195c7ddaeb67bb797
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>

dist/changes-4.0.0.md

@@ -103,8 +103,8 @@ Test Integration
 * Fixed that additional output of passing tests was ignored
 * Fixed test detection with CMake projects (QTCREATORBUG-15813)
 * Google Test
-  * Added support for typed tests
-  * Fixed parsing of file and line information
+    * Added support for typed tests
+    * Fixed parsing of file and line information
 
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