Reversed some incorrect TQt renaming related to qhelpgenerator.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

Doxyfile.global

@@ -905,7 +905,7 @@ TOC_EXPAND             = NO
 
 # If the GENERATE_QHP tag is set to YES and both QHP_NAMESPACE and QHP_VIRTUAL_FOLDER
 # are set, an additional index file will be generated that can be used as input for
-# TQt's qhelpgenerator to generate a TQt Compressed Help (.qch) of the generated
+# Qt's qhelpgenerator to generate a Qt Compressed Help (.qch) of the generated
 # HTML documentation.
 
 GENERATE_QHP           = NO
@@ -917,13 +917,13 @@ GENERATE_QHP           = NO
 QCH_FILE               =
 
 # The QHP_NAMESPACE tag specifies the namespace to use when generating
-# TQt Help Project output. For more information please see
+# Qt Help Project output. For more information please see
 # http://doc.qt.io/qt-5/tqthelpproject.html#namespace
 
 QHP_NAMESPACE          =
 
 # The QHP_VIRTUAL_FOLDER tag specifies the namespace to use when generating
-# TQt Help Project output. For more information please see
+# Qt Help Project output. For more information please see
 # http://doc.qt.io/qt-5/tqthelpproject.html#virtual-folders
 
 QHP_VIRTUAL_FOLDER     = doc
@@ -946,7 +946,7 @@ QHP_CUST_FILTER_ATTRS  =
 QHP_SECT_FILTER_ATTRS  =
 
 # If the GENERATE_QHP tag is set to YES, the QHG_LOCATION tag can
-# be used to specify the location of TQt's qhelpgenerator.
+# be used to specify the location of Qt's qhelpgenerator.
 # If non-empty doxygen will try to run qhelpgenerator on the generated
 # .qhp file.
 
@@ -993,7 +993,7 @@ TREEVIEW_WIDTH         = 250
 FORMULA_FONTSIZE       = 10
 
 # When the SEARCHENGINE tag is enable doxygen will generate a search box for the HTML output. The underlying search engine uses javascript
-# and DHTML and should work on any modern browser. Note that when using HTML help (GENERATE_HTMLHELP) or TQt help (GENERATE_QHP)
+# and DHTML and should work on any modern browser. Note that when using HTML help (GENERATE_HTMLHELP) or Qt help (GENERATE_QHP)
 # there is already a search function so this one should typically
 # be disabled.