fix a couple of help typos

src/dqe_count_above_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:count_above(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the count of value above a given threashold.">>.
+    <<"Returns the count of value above a given threshold.">>.

src/dqe_count_above_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:count_above_conf(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the count of value above a given confidence threashold.">>.
+    <<"Returns the count of value above a given confidence threshold.">>.

src/dqe_count_below_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:count_below(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the count of value below a given threashold.">>.
+    <<"Returns the count of value below a given threshold.">>.

src/dqe_count_below_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:count_below_conf(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the count of value below a given confidence threashold.">>.
+    <<"Returns the count of value below a given confidence threshold.">>.

src/dqe_first_above_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:first_above(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the fist value above a given threashold.">>.
+    <<"Returns the first value above a given threshold.">>.

src/dqe_first_above_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, first = First}) ->
     {mmath_aggr:first_above_conf(Data, Const, First), S}.
 
 help() ->
-    <<"Returns the first value above a given confidence threashold.">>.
+    <<"Returns the first value above a given confidence threshold.">>.

src/dqe_first_below_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:first_below(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the fist value below a given threashold.">>.
+    <<"Returns the first value below a given threshold.">>.

src/dqe_first_below_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, first = First}) ->
     {mmath_aggr:first_below_conf(Data, Const, First), S}.
 
 help() ->
-    <<"Returns the first value below a given confidence threashold.">>.
+    <<"Returns the first value below a given confidence threshold.">>.

src/dqe_last_above_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:last_above(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the last value above a given threashold.">>.
+    <<"Returns the last value above a given threshold.">>.

src/dqe_last_above_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, last = Last}) ->
     {mmath_aggr:last_above_conf(Data, Const, Last), S}.
 
 help() ->
-    <<"Returns the last value above a given confidence threashold.">>.
+    <<"Returns the last value above a given confidence threshold.">>.

src/dqe_last_below_aggr.erl

@@ -36,4 +36,4 @@ run([Data], S = #state{const = Const, count = Count}) ->
     {mmath_aggr:last_below(Data, Const, Count), S}.
 
 help() ->
-    <<"Returns the last value below a given threashold.">>.
+    <<"Returns the last value below a given threshold.">>.

src/dqe_last_below_conf_aggr.erl

@@ -37,4 +37,4 @@ run([Data], S = #state{const = Const, last = Last}) ->
     {mmath_aggr:last_below_conf(Data, Const, Last), S}.
 
 help() ->
-    <<"Returns the last value below a given confidence threashold.">>.
+    <<"Returns the last value below a given confidence threshold.">>.