Fixed typo and rebase

velox/docs/functions/spark/regexp.rst

@@ -6,9 +6,9 @@ Regular expression functions use RE2 as the regex engine. RE2 is fast, but
 supports only a subset of PCRE syntax and in particular does not support
 backtracking and associated features (e.g. back references).
 Java and RE2 regex output can diverage and users should be cautious that
-the patterns they are using perform similarlly between RE2 and Java.
+the patterns they are using perform similarly between RE2 and Java.
 For example, character class unions, intersections, and differences
-``([a[b]], [a&&[b]], [a&&[^b]])`` are intepreted as single characters
+``([a[b]], [a&&[b]], [a&&[^b]])`` are intepreted as a single character class
 that contain ``[, &, and ^`` rather than union, intersection, or
 difference of the character classes.