Document cell padding not supporting spaces between values in BBCode in RichTextLabel

Author: Calinou

tutorials/ui/bbcode_in_richtextlabel.rst

@@ -355,6 +355,7 @@ Reference
       | A `drop cap <https://www.computerhope.com/jargon/d/dropcap.htm>`__ is typically one
         uppercase character, but ``[dropcap]`` supports containing multiple characters.
         ``margins`` values are comma-separated and can be positive, zero or negative.
+        Values must **not** be separated by spaces, or the values won't be parsed correctly.
         Negative top and bottom margins are particularly useful to allow the rest of
         the paragraph to display below the dropcap.
 
@@ -879,11 +880,11 @@ Cell options
 
 - **padding**
 
-  +-----------+--------------------------------------------+
-  | `Values`  | 4 comma-separated floating-point numbers   |
-  +-----------+--------------------------------------------+
-  | `Default` | 0, 0, 0, 0                                 |
-  +-----------+--------------------------------------------+
+  +-----------+--------------------------------------------------------------------------+
+  | `Values`  | 4 comma-separated floating-point numbers (**no space** after each comma) |
+  +-----------+--------------------------------------------------------------------------+
+  | `Default` | ``0,0,0,0``                                                              |
+  +-----------+--------------------------------------------------------------------------+
 
   Left, top, right, and bottom cell padding.