Doc: QtCore: Fix documentation issues

* Fix references to Wait Conditions Example, Semaphores Example, and
  MIME Type Browser Example as they were renamed.

* Rename 'Shared Memory' example as its title clashes with
  the title of another page (sharedmemory.html).

src/corelib/global/qfloat16.cpp:
    * warning: Invalid '\relates' (already a member of 'qfloat16')

Pick-to: 6.5 6.6
Change-Id: Ia28be8e3882a7ad1fadcdbd50a657705d58526bd
Reviewed-by: Andreas Eliasson <andreas.eliasson@qt.io>

doc/global/manifest-meta.qdocconf

@@ -203,8 +203,8 @@ manifestmeta.thumbnail.attributes  = "imageUrl:qthelp\://org.qt-project.qtdoc.$Q
 manifestmeta.thumbnail.names    =      "QtCore/Contiguous Cache Example" \
                                        "QtCore/Custom Type Example" \
                                        "QtCore/JSON Save Game Example" \
-                                       "QtCore/Semaphores Example" \
-                                       "QtCore/Wait Conditions Example" \
+                                       "QtCore/Producer and Consumer using Semaphores" \
+                                       "QtCore/Producer and Consumer using Wait Conditions" \
                                        "QtConcurrent/Word Count" \
                                        "QtGui/Raster Window Example" \
                                        "QtNetwork/Network Download*" \

examples/corelib/ipc/doc/src/sharedmemory.qdoc

@@ -3,7 +3,7 @@
 
 /*!
   \example ipc/sharedmemory
-  \title Shared Memory
+  \title IPC: Shared Memory
   \ingroup examples-ipc
   \brief Demonstrates how to share image data between different processes
   using the Shared Memory IPC mechanism.

examples/corelib/threads/doc/src/semaphores.qdoc

@@ -29,7 +29,7 @@
 
     An alternative to using QSemaphore to solve the producer-consumer
     problem is to use QWaitCondition and QMutex. This is what the
-    \l{Wait Conditions Example} does.
+    \l{Producer and Consumer using Wait Conditions} example does.
 
     \section1 Global Variables
 

examples/corelib/threads/doc/src/waitconditions.qdoc

@@ -29,7 +29,7 @@
 
     An alternative to using QWaitCondition and QMutex to solve the
     producer-consumer problem is to use QSemaphore. This is what the
-    \l{Semaphores Example} does.
+    \l{Producer and Consumer using Semaphores} example does.
 
     \section1 Global Variables
 

src/corelib/doc/src/ipc.qdoc

@@ -86,7 +86,7 @@
     \keyword ipc
     \keyword shared memory
 
-    \brief Overview of the techniques for sharing memory between processes
+    \brief Overview of the techniques for sharing memory between processes.
 
     Qt provides two techniques to share memory with other processes in the same
     system: \l{QSharedMemory} and memory-mapped files using \l{QFile}. Memory

src/corelib/global/qfloat16.cpp

@@ -366,7 +366,6 @@ Q_CORE_EXPORT void qFloatFromFloat16(float *out, const qfloat16 *in, qsizetype l
 /*!
     \fn size_t qfloat16::qHash(qfloat16 key, size_t seed)
     \since 6.5.3
-    \relates qfloat16
 
     Returns the hash value for the \a key, using \a seed to seed the
     calculation.

src/corelib/mimetypes/qmimedatabase.cpp

@@ -554,7 +554,7 @@ bool QMimeDatabasePrivate::inherits(const QString &mime, const QString &parent)
 
     \snippet code/src_corelib_mimetype_qmimedatabase.cpp 0
 
-    \sa QMimeType, {MIME Type Browser Example}
+    \sa QMimeType, {MIME Type Browser}
  */
 
 /*!

src/corelib/mimetypes/qmimetype.cpp

@@ -40,7 +40,7 @@ using namespace Qt::StringLiterals;
     MIME types can inherit from each other: for instance a C source file is
     a specific type of plain text file, so text/x-csrc inherits text/plain.
 
-    \sa QMimeDatabase, {MIME Type Browser Example}
+    \sa QMimeDatabase, {MIME Type Browser}
  */
 
 /*!

src/corelib/thread/qwaitcondition.qdoc

@@ -51,12 +51,12 @@
     simultaneously are unpredictable.
 
     Wait conditions are a powerful thread synchronization primitive.
-    The \l{Wait Conditions Example} example shows how
-    to use QWaitCondition as an alternative to QSemaphore for
-    controlling access to a circular buffer shared by a producer
+    The \l{Producer and Consumer using Wait Conditions} example
+    shows how to use QWaitCondition as an alternative to QSemaphore
+    for controlling access to a circular buffer shared by a producer
     thread and a consumer thread.
 
-    \sa QMutex, QSemaphore, QThread, {Wait Conditions Example}
+    \sa QMutex, QSemaphore, QThread, {Producer and Consumer using Wait Conditions}
 */
 
 /*!