[OpenMP][libomp] Fix some Doxygen issues

Fix spelling of variable names and remove accidental references (#)
in Doxygen comments.

Author: jpeyton52

openmp/runtime/src/kmp_csupport.cpp

@@ -354,9 +354,9 @@ void __kmpc_push_num_teams(ident_t *loc, kmp_int32 global_tid,
 @ingroup PARALLEL
 @param loc source location information
 @param global_tid global thread number
-@param num_teams_lo lower bound on number of teams requested for the teams
+@param num_teams_lb lower bound on number of teams requested for the teams
 construct
-@param num_teams_up upper bound on number of teams requested for the teams
+@param num_teams_ub upper bound on number of teams requested for the teams
 construct
 @param num_threads number of threads per team requested for the teams construct
 

openmp/runtime/src/kmp_tasking.cpp

@@ -2251,7 +2251,7 @@ kmp_int32 __kmpc_omp_taskyield(ident_t *loc_ref, kmp_int32 gtid, int end_part) {
 Flags for special info per task reduction item.
 */
 typedef struct kmp_taskred_flags {
-  /*! 1 - use lazy alloc/init (e.g. big objects, #tasks < #threads) */
+  /*! 1 - use lazy alloc/init (e.g. big objects, num tasks < num threads) */
   unsigned lazy_priv : 1;
   unsigned reserved31 : 31;
 } kmp_taskred_flags_t;
@@ -5092,7 +5092,7 @@ void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int if_val,
 @param nogroup   Flag, 1 if nogroup clause specified, 0 otherwise
 @param sched     Schedule specified 0/1/2 for none/grainsize/num_tasks
 @param grainsize Schedule value if specified
-@param modifer   Modifier 'strict' for sched, 1 if present, 0 otherwise
+@param modifier  Modifier 'strict' for sched, 1 if present, 0 otherwise
 @param task_dup  Tasks duplication routine
 
 Execute the taskloop construct.

openmp/runtime/src/kmp_wait_release.h

@@ -105,7 +105,7 @@ template <flag_type FlagType> class kmp_flag {
 protected:
   flag_properties t; /**< "Type" of the flag in loc */
   kmp_info_t *waiting_threads[1]; /**< Threads sleeping on this thread. */
-  kmp_uint32 num_waiting_threads; /**< #threads sleeping on this thread. */
+  kmp_uint32 num_waiting_threads; /**< Num threads sleeping on this thread. */
   std::atomic<bool> *sleepLoc;
 
 public: