[code style] $1 is used instead of named parameter

[ilyash-b]

pr-size-labeler/src/github.sh

Line 19 in 48a746c

local -r body=$(curl -sSL -H "Authorization: token $GITHUB_TOKEN" -H "$GITHUB_API_HEADER" "$GITHUB_API_URI/repos/$GITHUB_REPOSITORY/pulls/$1")

$1 is used instead of pr_number