added spaces in a couple of usage sections

Author: mahrud

M2/Macaulay2/packages/Macaulay2Doc/operators/augmented_assignment.m2

@@ -27,7 +27,7 @@ scan(core "augmentedAssignmentOperators", op -> (
 	document {
 	    Key => op,
 	    Headline => "augmented assignment for " | binop,
-	    Usage => "x " | toString op | "y",
+	    Usage => "x " | toString op | " y",
 	    "In most cases, ", SAMP ("x " | toString op | " y"),
 	    " is equivalent to ", SAMP("x = x " | binop | " y"),
 	    ", unless a method is installed for the class of ",

M2/Macaulay2/packages/Macaulay2Doc/ov_lists.m2

@@ -852,7 +852,7 @@ document {
 	  (symbol |, Array, Array),
 	  (symbol |, Sequence, Sequence)},
      Headline => "join lists, sequences or arrays",
-     Usage => "v|w",
+     Usage => "v | w",
      Inputs => {"v" => Nothing =>  {ofClass List, ", ",
 	       ofClass Array, ", or ",
 	       ofClass Sequence},