fix doc page errors

doc/src/fix_hyper_global.txt

@@ -146,8 +146,8 @@ If {qfactor} is set too large, then transitions from one energy basin
 to another are affected because the bias potential is non-zero at the
 transition state (e.g. saddle point).  If {qfactor} is set too small
 than little boost is achieved because the Eij strain of some bond in
-the system will (nearly) always exceed {qfactor).  A value of 0.3 for
-{qfactor} is typically a reasonable value.
+the system will (nearly) always exceed {qfactor}.  A value of 0.3 for
+{qfactor} is typically reasonable.
 
 The {Vmax} argument is the prefactor on the bias potential.  Ideally,
 tt should be set to a value slightly less than the smallest barrier

doc/src/fix_hyper_local.txt

@@ -172,7 +172,7 @@ If {qfactor} is set too large, then transitions from one energy basin
 to another are affected because the bias potential is non-zero at the
 transition state (e.g. saddle point).  If {qfactor} is set too small
 than little boost can be achieved because the Eij strain of some bond in
-the system will (nearly) always exceed {qfactor).  A value of 0.3 for
+the system will (nearly) always exceed {qfactor}.  A value of 0.3 for
 {qfactor} is typically a reasonable value.
 
 The {Vmax} argument is a fixed prefactor on the bias potential.  There

doc/src/hyper.txt

@@ -73,7 +73,7 @@ time between events is reduced by a factor of Nr replicas.  For both
 methods, per CPU second, more physical time elapses and more events
 occur.  See the "prd"_prd.html doc page for more info about PRD.
 
-An HD run has several stages, which are repeated each time an "event"
+An HD run has several stages, which are repeated each time an event
 occurs, as explained below.  The logic for an HD run is as follows:
 
 quench
@@ -121,7 +121,7 @@ event/displace"_compute_event_displace.html command.  Other
 event-checking computes may be added.  "Compute
 event/displace"_compute_event_displace.html checks whether any atom in
 the compute group has moved further than a specified threshold
-distance.  If so, an "event" has occurred.
+distance.  If so, an event has occurred.
 
 If this happens, the list of bonds is reset, since some bond pairs
 are likely now too far apart, and new pairs are likely close enough