auto merge of #14292 : limeburst/rust/master, r=alexcrichton

Author: bors

src/libcore/lib.rs

@@ -17,7 +17,7 @@
 //!
 //! * `memcpy`, `memcmp`, `memset` - These are core memory routines which are
 //!   often generated by LLVM. Additionally, this library can make explicit
-//!   calls to these funcitons. Their signatures are the same as found in C.
+//!   calls to these functions. Their signatures are the same as found in C.
 //!   These functions are often provided by the system libc, but can also be
 //!   provided by `librlibc` which is distributed with the standard rust
 //!   distribution.