This is rather simple and uncomplicated. The Psalms in Hebrew Greek and Latin have slightly different numbering.
The Psalm numbered #48 in Protestant Bibles is #47 in Catholic Bibles. Let me quote from the footnote to my edition of the Douay-Rheims Bible (The Confraternity Edition of 1948)
The footnote to Ps 9B says this:
The Hebrew Psalter numbers this second part of Psalm 9, "Psalm 10".
It also joins Psalms 146 and 147 together. These changes account for
the differences in the numbering of the Psalms in Protestant Bibles
(which follow the Hebrew) and Catholic Bibles.
That is, Ps 48 in Protestant and Hebrew Bibles is the same as Ps 47 in Latin and Catholic Bibles. (There is also a slight difference in verse numbering within the Psalms as well.) Allowing for this difference, we note the following text:
Ps 48:1 (Protestant and Hebrew) Bibles is (BSB):
A song. A Psalm of the sons of Korah. Great is the LORD, and greatly
to be praised in the city of our God, His holy mountain.
Ps 47:1, 2 in DRB is:
A psalm of a canticle, for the sons of Core, on the second day of the
week. Great is the Lord, and exceedingly to be praised in the city of
our God, in his holy mountain.
Thus, there is no real dispute here in text.
In Ps 145/144 we have a similar matter.
The text of Ps 145:3 from BSB (protestant and Hebrew Bibles) is:
Great is the LORD and greatly to be praised; His greatness is
The text of 144:3 in the DRB is:
Great is the Lord, and greatly to be praised: and of his greatness
there is no end.
Again, there is no real textual dispute here.