Auto merge of #3511 - phansch:remove_allow_doc_markdown, r=phansch
Auto merge of #3511 - phansch:remove_allow_doc_markdown, r=phansch

Remove allow(doc_markdown) in excessive_precision.rs

Closes #3299

graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust