doc: RCU: Fix brackets

Remove needless brackets and add missing brackets.

Signed-off-by: Manuel Ebner <manuelebner@mailbox.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

Documentation/RCU/Design/Expedited-Grace-Periods/Expedited-Grace-Periods.rst

@@ -410,7 +410,7 @@ workqueues (see Documentation/core-api/workqueue.rst).
 
 The requesting task still does counter snapshotting and funnel-lock
 processing, but the task reaching the top of the funnel lock does a
-``schedule_work()`` (from ``_synchronize_rcu_expedited()`` so that a
+``schedule_work()`` (from ``_synchronize_rcu_expedited()``) so that a
 workqueue kthread does the actual grace-period processing. Because
 workqueue kthreads do not accept POSIX signals, grace-period-wait
 processing need not allow for POSIX signals. In addition, this approach

Documentation/RCU/Design/Memory-Ordering/TreeRCU-gp.svg

@@ -3933,7 +3933,7 @@
          font-style="normal"
          y="-3914.085"
          x="3745.7725"
-         xml:space="preserve">rcu__report_qs_rdp())</text>
+         xml:space="preserve">rcu__report_qs_rdp()</text>
     </g>
     <g
        id="g4504-3"

Documentation/RCU/Design/Memory-Ordering/TreeRCU-qs.svg

@@ -815,7 +815,7 @@
          font-style="normal"
          y="-3914.085"
          x="3745.7725"
-         xml:space="preserve">rcu__report_qs_rdp())</text>
+         xml:space="preserve">rcu__report_qs_rdp()</text>
     </g>
     <g
        id="g4504-3"

Documentation/RCU/Design/Requirements/Requirements.rst

@@ -2785,7 +2785,7 @@ both srcu_read_lock() and srcu_read_unlock().  This need is handled by
 a Tasks Trace RCU API implemented as thin wrappers around SRCU-fast,
 which avoids the read-side memory barriers, at least for architectures
 that apply noinstr to kernel entry/exit code (or that build with
-``CONFIG_TASKS_TRACE_RCU_NO_MB=y``.
+``CONFIG_TASKS_TRACE_RCU_NO_MB=y``).
 
 Now that the implementation is based on SRCU-fast, a call
 to synchronize_rcu_tasks_trace() implies at least one call to