docs: clarify the docstrings

smartparens.el

@@ -1536,8 +1536,11 @@ kill \"subwords\" when `subword-mode' is active."
  :group 'smartparens)
 
 (defcustom sp-delete-blank-sexps nil
- "If non-nil, allow deletion of enclosing pair when it only
- contains whitespace."
+ "If non-nil, automatically delete enclosing pair when it only
+contains whitespace.
+
+This setting only has effect if `smartparens-strict-mode' is
+active."
  :type 'boolean
  :group 'smartparens)
 
@@ -1835,18 +1838,19 @@ If optional argument P is present test this instead of point."
 
 If optional argument P is present test this instead of point.
 
-Returns a cons containing the position of the beginning and end
-delimiters.
+If the sexp around the point is blank, the return value is a cons
+containing the beginning and end of the expression.
 
 Warning: it is only safe to call this when point is inside a
 sexp, otherwise the call may be very slow."
  (save-excursion
  (when p (goto-char p))
  (-when-let (enc (sp-get-enclosing-sexp))
- (sp-get enc (when (string-match-p
- "\\`[ \t\n]*\\'"
- (buffer-substring-no-properties :beg-in :end-in))
- (cons :beg :end))))))
+ (sp-get enc
+ (when (string-match-p
+ "\\`[ \t\n]*\\'"
+ (buffer-substring-no-properties :beg-in :end-in))
+ (cons :beg :end))))))
 
 (defun sp-char-is-escaped-p (&optional point)
  "Test if the char at POINT is escaped or not.