chore: add normalize whitespace prism plugin

When passing code sample as children to a component, React add an extra
newline at the end of the sample. Both line-numbers and command-line
plugins use the newline character. So each code blocks was printing an
extra new line at the end. It is not wanted. The normalize whitespace
plugin prevent this.

1 files changed, 1 insertions, 0 deletions

diff --git a/.babelrc b/.babelrc
index 95e08b4..4cdf3d2 100644
--- a/.babelrc
+++ b/.babelrc
@@ -43,6 +43,7 @@
           "line-highlight",
           "line-numbers",
           "match-braces",
+          "normalize-whitespace",
           "show-language",
           "toolbar"
         ]