Update doc/specs/stdlib_linalg.md

Co-authored-by: Jeremie Vandenplas <jeremie.vandenplas@gmail.com>

Author: perazz

doc/specs/stdlib_linalg.md

@@ -1448,7 +1448,7 @@ This `pure subroutine` interface computes one of several vector norms of `real`
 the value of the `order` input argument. \( A \) may be an array of any rank. 
 
 Result `nrm` returns a `real`, scalar norm value for the whole array; if `dim` is specified, `nrm` is a rank n-1 
-array with the same shape as \(A \) and dimension `dim` collapsed, containing all norms evaluated along `dim`.
+array with the same shape as \(A \) and dimension `dim` dropped, containing all norms evaluated along `dim`.
 
 ### Syntax