Doc: Change links from froglogic to qt domain

Change-Id: Ic249f8dfa168948eddc83f35314708ffb40e75b1
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
(cherry picked from commit 486c8aae62b5702fee82ffc65a3b034134704739)

src/testlib/doc/src/qt-webpages.qdoc

@@ -30,8 +30,8 @@
 */
 
 /*!
-    \externalpage https://www.froglogic.com/coco/
-    \title Froglogic Coco Code Coverage
+    \externalpage https://www.qt.io/product/quality-assurance/coco
+    \title Coco
 */
 
 /*!

src/testlib/doc/src/qttest-best-practices.qdoc

@@ -191,7 +191,7 @@
 
     \section2 Use Coverage Tools
 
-    Use a coverage tool such as \l {Froglogic Coco Code Coverage} or \l {gcov}
+    Use a coverage tool such as \l {Coco} or \l {gcov}
     to help write tests that cover as many statements, branches, and conditions
     as possible in the function or class being tested. The earlier this is done
     in the development cycle for a new feature, the easier it will be to catch

src/testlib/selfcover.cmake

@@ -28,7 +28,7 @@ function(qt_internal_apply_testlib_coverage_options target)
         --cs-mcc # enable Multiple Condition Coverage
         --cs-mcdc # enable Multiple Condition / Decision Coverage
     # (recommended for ISO 26262 ASIL A, B and C -- highly recommended for ASIL D)
-    # https://doc.froglogic.com/squish-coco/4.1/codecoverage.html#sec%3Amcdc
+    # https://doc.qt.io/coco/code-coverage-analysis.html#mc-dc
     )
     target_compile_options(${target} PRIVATE
         ${testlib_coverage_options}