Apply the more straightforward suggestions from code review

Co-authored-by: Ivan Pribec <ivan.pribec@gmail.com>

Author: gareth-nx

doc/specs/stdlib_selection.md

@@ -25,7 +25,7 @@ which implements selection algorithms.
 The module `stdlib_selection` defines two generic subroutines:
 * `select` is used to find the k-th smallest entry of an array. The input
 array is also modified in-place, and on return will be partially sorted
-such that `all(array(1:k) <= array(k)))`  and `all(array(k) <= array((k+1):size(array)))`.
+such that `all(array(1:k) <= array(k)))`  and `all(array(k) <= array((k+1):size(array)))` is true.
 The user can optionally specify `left` and `right` indices to constrain the search
 for the k-th smallest value. This can be useful if you have previously called `select`
 to find a smaller or larger rank (that will have led to partial sorting of

src/stdlib_selection.fypp

@@ -8,7 +8,7 @@ module stdlib_selection
 ! This code was modified from the "Coretran" implementation "quickSelect" by
 ! Leon Foks, https://github.com/leonfoks/coretran/tree/master/src/sorting
 !
-! Leon Foks gave permission to be release this code under stdlib's MIT license.
+! Leon Foks gave permission to release this code under stdlib's MIT license.
 ! (https://github.com/fortran-lang/stdlib/pull/500#commitcomment-57418593)
 !
 
@@ -18,7 +18,7 @@ implicit none
 
 private
 
-public select, arg_select
+public :: select, arg_select
 
 interface select
     !! version: experimental
@@ -57,7 +57,8 @@ contains
           ${arraytype}$, intent(inout) :: a(:)
               !! Array in which we seek the k-th smallest entry.
               !! On output it will be partially sorted such that
-              !! `all(a(1:(k-1)) <= a(k)) .and. all(a(k) <= a((k+1):size(a)))`.
+              !! `all(a(1:(k-1)) <= a(k)) .and. all(a(k) <= a((k+1):size(a)))`
+              !! is true.
           ${inttype}$, intent(in) :: k
               !! We want the k-th smallest entry. E.G. `k=1` leads to
               !! `kth_smallest=min(a)`, and `k=size(a)` leads to

src/tests/selection/CMakeLists.txt

@@ -1,7 +1,8 @@
 ### Pre-process: .fpp -> .f90 via Fypp
 
 # Create a list of the files to be preprocessed
-set(fppFiles
+set(
+  fppFiles
     test_selection.fypp
 )