[3.10] GH-98906 ```re``` module: ```search() vs. match()``` section should mention ```fullmatch()``` (GH-98916) (GH-99913)

GH-98906 ```re``` module: ```search() vs. match()``` section should mention ```fullmatch()``` (GH-98916)

Mention fullmatch along with search and match.
(cherry picked from commit e0f91deb5930ecb02e7f8ced9bd82609e6889fb0)

Co-authored-by: ram vikram singh <ramvikrams243@gmail.com>

Co-authored-by: ram vikram singh <ramvikrams243@gmail.com>