Updated read me

supports/postgres.md

@@ -28,7 +28,7 @@ https://www.postgresql.org/docs/16/functions-math.html
 | ✅︎          | erf ( double precision ) → double precision                                                | Error function                                                                                                                                                                                | erf(1.0) → 0.8427007929497149           |
 | ✅           | erfc ( double precision ) → double precision                                               | Complementary error function (1 - erf(x), without loss of precision for large inputs)                                                                                                         | erfc(1.0) → 0.15729920705028513         | 
 | ❓           | min_scale ( numeric ) → integer                                                            | Minimum scale (number of fractional decimal digits) needed to represent the supplied value precisely                                                                                          | min_scale(8.4100) → 2                   | 
-| ❓           | mod ( y numeric_type, x numeric_type ) → numeric_type                                      | Remainder of y/x; available for smallint, integer, bigint, and numeric                                                                                                                        | mod(9, 4) → 1                           | 
+| ✅           | mod ( y numeric_type, x numeric_type ) → numeric_type                                      | Remainder of y/x; available for smallint, integer, bigint, and numeric                                                                                                                        | mod(9, 4) → 1                           | 
 | ❓           | scale ( numeric ) → integer                                                                | Scale of the argument (the number of decimal digits in the fractional part)                                                                                                                   | scale(8.4100) → 4                       | 
 | ❓           | sign ( numeric ) → numeric                                                                 | Sign of the argument (-1, 0, or +1)                                                                                                                                                           | sign(-8.4) → -1                         | 
 | ❓           | trim_scale ( numeric ) → numeric                                                           | Reduces the value's scale (number of fractional decimal digits) by removing trailing zeroes                                                                                                   | trim_scale(8.4100) → 8.41               |