Doc: Fix link issues for QtCore

- Fix linking to CMake manual.
- Remove references to the state machine framework.

Task-number: QTBUG-86295
Change-Id: I01a61088da8eb36760949f39be5e71d92de956f2
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

examples/corelib/serialization/savegame/doc/src/savegame.qdoc

@@ -136,9 +136,8 @@
     and \c "save.dat" for CBOR. We print a warning and return \c false if the
     file couldn't be opened.
 
-    Since QJsonDocument's \l{QJsonDocument::fromJson()}{fromJson()} and
-    \l{QJsonDocument::fromBinaryData()}{fromBinaryData()} functions both take a
-    QByteArray, we can read the entire contents of the save file into one,
+    Since \l QJsonDocument::fromJson() and \l QCborValue::fromCbor() both take
+    a QByteArray, we can read the entire contents of the save file into one,
     regardless of the save format.
 
     After constructing the QJsonDocument, we instruct the Game object to read

src/corelib/doc/src/animation.qdoc

@@ -93,15 +93,6 @@
     animations. Note also that the groups are subclasses of
     QAbstractAnimation, so groups can themselves contain other groups.
 
-    The animation framework can be used on its own, but is also
-    designed to be part of the state machine framework (See the
-    \l{The State Machine Framework}{state machine framework} for an
-    introduction to the Qt state machine). The state machine provides
-    a special state that can play an animation. A QState can also set
-    properties when the state is entered or exited, and this special
-    animation state will interpolate between these values when given a
-    QPropertyAnimation. We will look more closely at this later.
-
     Behind the scenes, the animations are controlled by a global
     timer, which sends \l{QAbstractAnimation::updateCurrentTime()}{updates} to
     all animations that are playing.

src/corelib/doc/src/qt6-changes.qdoc

@@ -416,8 +416,9 @@
         QT += core5compat
     \endcode
 
-    In case you already ported your application or library to the \l cmake
-    build system, add the following to your \c CMakeList.txt:
+    In case you already ported your application or library to the
+    \l {Build with CMake}{cmake} build system, add the following to your
+    \c CMakeList.txt:
     \code
         PUBLIC_LIBRARIES
             Qt::Core5Compat
@@ -785,8 +786,9 @@
         QT += core5compat
     \endcode
 
-    In case you already ported your application or library to the \l cmake
-    build system, add the following to your \c CMakeList.txt:
+    In case you already ported your application or library to the
+    \l {Build with CMake}{cmake} build system, add the following to your
+    \c CMakeList.txt:
     \code
         PUBLIC_LIBRARIES
             Qt::Core5Compat

src/corelib/doc/src/qtcore-index.qdoc

@@ -56,7 +56,7 @@
     \include module-use.qdocinc using qt module
     \quotefile overview/using-qt-core.cmake
 
-    See also the \l[QtDoc]{Build with CMake} overview.
+    See also the \l {Build with CMake} overview.
 
     \section2 Building with qmake
 
@@ -97,7 +97,6 @@
     \list
     \li \l{The Animation Framework}
     \li \l{JSON Support in Qt}
-    \li \l{The State Machine Framework}
     \li \l{How to Create Qt Plugins}
     \li \l{The Event System}
     \endlist
@@ -135,7 +134,6 @@
         \li \l{Container Classes}
         \li \l{Plugin Classes}
         \li \l{Implicitly Shared Classes}
-        \li \l{State Machine Classes}
         \li \l{Input/Output and Networking}{Input/Output Classes}
         \li \l{Event Classes}
         \endlist

src/corelib/global/qrandom.cpp

@@ -695,9 +695,9 @@ inline QRandomGenerator::SystemGenerator &QRandomGenerator::SystemGenerator::sel
 /*!
     \fn bool QRandomGenerator::operator!=(const QRandomGenerator &rng1, const QRandomGenerator &rng2)
 
-    Returns true if the two the two engines \a rng1 and \a rng2 are at
+    Returns \c true if the two the two engines \a rng1 and \a rng2 are at
     different states or if one of them is reading from the operating system
-    facilities and the other is not, false otherwise.
+    facilities and the other is not, \c false otherwise.
 */
 
 /*!