Change name of unit test sub-module to "tests".

Changes the style guidelines regarding unit tests to recommend using a
sub-module named "tests" instead of "test" for unit tests as "test"
might clash with imports of libtest.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/librustdoc/html/toc.rs b/src/librustdoc/html/toc.rs
index 78feb6c77c4..93aa74d7005 100644
--- a/src/librustdoc/html/toc.rs
+++ b/src/librustdoc/html/toc.rs
@@ -198,7 +198,7 @@ impl fmt::Display for Toc {
 }
 
 #[cfg(test)]
-mod test {
+mod tests {
     use super::{TocBuilder, Toc, TocEntry};
 
     #[test]