internal/poll: fix a few function names on comments

Change-Id: I5b1dfeeb0ae5ac32667633151ef83bcf4654c43f
Reviewed-on: https://go-review.googlesource.com/c/go/+/357957
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
diff --git a/src/internal/poll/fd_unix.go b/src/internal/poll/fd_unix.go
index 60b59df..5489662 100644
--- a/src/internal/poll/fd_unix.go
+++ b/src/internal/poll/fd_unix.go
@@ -230,7 +230,7 @@
 	}
 }
 
-// ReadFrom wraps the recvfrom network call for IPv4.
+// ReadFromInet4 wraps the recvfrom network call for IPv4.
 func (fd *FD) ReadFromInet4(p []byte, from *syscall.SockaddrInet4) (int, error) {
 	if err := fd.readLock(); err != nil {
 		return 0, err
@@ -257,7 +257,7 @@
 	}
 }
 
-// ReadFrom wraps the recvfrom network call for IPv6.
+// ReadFromInet6 wraps the recvfrom network call for IPv6.
 func (fd *FD) ReadFromInet6(p []byte, from *syscall.SockaddrInet6) (int, error) {
 	if err := fd.readLock(); err != nil {
 		return 0, err