Rollup merge of #80147 - pierwill:patch-9, r=lcnr

Add missing punctuation to std::alloc docs

Add a period to first line of module docs to match other modules in std.
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Ralf Jung 2020-12-18 16:22:14 +01:00 committed by GitHub
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@ -1,4 +1,4 @@
//! Memory allocation APIs
//! Memory allocation APIs.
//!
//! In a given program, the standard library has one “global” memory allocator
//! that is used for example by `Box<T>` and `Vec<T>`.