Minor doc improvement

Change-Id: I4899d4ed34bf1132f688390010640f226ace1264
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>

src/plugins/projectexplorer/project.cpp

@@ -512,11 +512,23 @@ QVariantMap Project::toMap() const
     return map;
 }
 
+/*!
+    Returns the directory that contains the project.
+
+    This includes the absolute path.
+*/
+
 Utils::FileName Project::projectDirectory() const
 {
     return projectDirectory(projectFilePath());
 }
 
+/*!
+    Returns the directory that contains the file \a top.
+
+    This includes the absolute path.
+*/
+
 Utils::FileName Project::projectDirectory(const Utils::FileName &top)
 {
     if (top.isEmpty())

src/plugins/projectexplorer/project.h

@@ -76,7 +76,6 @@ public:
 
     Core::IDocument *document() const;
     Utils::FileName projectFilePath() const;
-    // The directory that holds the project. This includes the absolute path.
     Utils::FileName projectDirectory() const;
     static Utils::FileName projectDirectory(const Utils::FileName &top);