Update stdlib_str2num.md

Review from Krausler

Author: jalvesz

doc/specs/stdlib_str2num.md

@@ -26,7 +26,7 @@ Convert a string or an array of strings to numerical types.
 
 `string`: argument has `intent(in)` and is of type `character(*)`.
 
-`mold`: argument has `intent(in)` and is of numerical type (that is of `integer` or of `real`). **Note**: the mold argument is included to help compilers chose the correct implementation at compile-time. Currently, compilers are not able to disambiguate functions with respect to the left-hand-side of an assignment.
+`mold`: argument has `intent(in)` and is of numerical type (that is of `integer` or of `real`). **Note**: The type of the `mold` argument defines the type of the result.
 
 ### Return value
 
@@ -65,7 +65,7 @@ Convert a stream of values in a string to an array of values.
 
 `string`: argument has `intent(in)` and is of type `character(*), pointer`.
 
-`mold`: argument has `intent(in)` and is of numerical type (currently of `integer` or `real`). **Note**: the mold argument is included to help compilers chose the correct implementation at compile-time. Currently, compilers are not able to disambiguate functions with respect to the left-hand-side of an assignment.
+`mold`: argument has `intent(in)` and is of numerical type (currently of `integer` or `real`). **Note**: The type of the `mold` argument defines the type of the result.
 
 ### Return value
 
@@ -102,4 +102,4 @@ The accuracy of the conversion is implementation dependent; it is recommended th
 
 `qp` : precision around 200*epsilon(0.0_qp)
 
-Where precision refers to the relative difference between `to_num` and `read`. On the other hand, `to_num` provides speed-ups ranging from 4x to >10x compared to the intrinsic `read`.
+Where precision refers to the relative difference between `to_num` and `read`. On the other hand, `to_num` provides speed-ups ranging from 4x to >10x compared to the intrinsic `read`.