The message means that both the packages have function with the same name which is View in this case. You can type search() which will give you the following message.

> search()
[1] ".GlobalEnv"        "package:quanteda"  "package:SparseM"  
[4] "tools:rstudio"     "package:stats"     "package:graphics"
[7] "package:grDevices" "package:utils"     "package:datasets"
[10] "package:methods"   "Autoloads"         "package:base"   

Since quanteda was loaded after utils, but it appears earlier in the search path, so the View function in that package quanteda will be used. Therefore, the View function in package utils will be masked. There are two ways to avoid this message.
First one:
library(utils)
library(quanteda, warn.conflicts = FALSE)

second one:
library(utils)
suppressPackageStartupMessages(library(quanteda))

It will work for sure.

Wish you have a nice Dragon Boat Holiday!

There is another way to solve your problem, if you really like View function in quanteda package. you could do this:
library(quanteda)
rm(View)
so R will only access the View function from quanteda package.

多谢！
thank you~