Apply suggestions from code review

Co-authored-by: Nick Treleaven <[email protected]>

spec/statement.dd

@@ -745,7 +745,7 @@ $(GNAME OpApplyParameter):
     Above, `opApply` is matched both when `i` is and is not `ref`, so by using
     a `ref` delegate parameter, both forms are supported.
 
-    Stating the type of the variable like in the first loop is optional,
+    Stating the type of the variable (as in the first loop) is optional,
     as is showcased in the second loop, where the type is inferred.
     )
 
@@ -770,10 +770,10 @@ $(GNAME OpApplyParameter):
 
     $(P The $(D opApply) and $(D opApplyReverse) member functions can be overloaded.
         Selection works similar to overload resolution by
-        comparing the number of `foreach` variables and number of parameters of `body` and,
-        if more than one overload remains unique overload,
-        matching the parameter types of `body` and each $(I ForeachType)
-        declared in the $(I ForeachStatement) when given.)
+        comparing the number of `foreach` variables with the number of parameters of `body` and,
+        if more than one overload remains,
+        matching each parameter of `body` against each $(I ForeachType)
+        declared in the $(I ForeachStatement).)
 
     $(BEST_PRACTICE Overload apply functions only with delegates differing in number of parameters
         to enable type inference for `foreach` variables.
@@ -828,20 +828,20 @@ $(CONSOLE
 
     $(PANEL
         The `scope` storage class on the `body` parameter means that the delegate does
-        not escape the scope of the apply function (an example would be assigning`body` to a
+        not escape the scope of the apply function (e.g. assigning `body` to a
         global variable). If it cannot be statically guaranteed that `body` does not escape, a closure may
         be allocated for it on the heap instead of the stack.
     )
 
-    $(P $(B Important:) If apply functions catch any exceptions, ensure that those
+    $(P $(B Important:) If an apply function catches any exceptions, ensure that those
         exceptions did not originate from the delegate. The user would expect
         exceptions thrown from a `foreach` body to both terminate the loop, and propagate outside
         the `foreach` body.
      )
 
 $(H4 $(LNAME2 template-op-apply, Template `opApply`))
 
-    $(P `opApply` and `opApplyReverse` can also be a function templates,
+    $(P `opApply` and `opApplyReverse` can also be function templates,
         which can optionally infer the types of parameters based on the $(I ForeachStatement).
     )