Clarify wording of specs

Author: ejovo13

src/stdlib_math.fypp

@@ -30,7 +30,7 @@ module stdlib_math
     !!
     !! Create rank 1 array of linearly spaced elements
     !! If the number of elements is not specified, create an array with size 100. If n is a negative value,
-    !! return an array with size 0. If n = 1, return end
+    !! return an array with size 0. If n = 1, return an array whose only element is end
     !!([Specification](../page/specs/stdlib_math.html#description))
     #:for k1, t1 in RC_KINDS_TYPES
       #:set RName = rname("linspace_default", 1, t1, k1)
@@ -59,7 +59,7 @@ module stdlib_math
     !!
     !! Create rank 1 array of linearly spaced elements from start to end.
     !! If the number of elements is not specified, create an array with size 100. If n is a negative value,
-    !! return an array with size 0. If n = 1, return end. When dealing with integers as the `start` and `end`
+    !! return an array with size 0. If n = 1, return a rank 1 array whose only element is end. When dealing with integers as the `start` and `end`
     !! parameters, the return type is always a double precision real.
     !!
     !!([Specification](../page/specs/stdlib_math.html#linspace))
@@ -93,8 +93,8 @@ module stdlib_math
   !!
   !! Create rank 1 array of logarithmically spaced elements from base**start to base**end.
   !! If the number of elements is not specified, create an array with size 50. If n is a negative value,
-  !! return an array with size 0. If n = 1, return base**end. If no base is specified, logspace will default to using a base of
-  !! 10
+  !! return an array with size 0. If n = 1, return an array whose only element is base**end. If no base
+  !! is specified, logspace will default to using a base of 10
   !!
   !!([Specification](../page/specs/stdlib_math.html#logspace))
   #!=========================================================