Rollup merge of #47999 - jaystrictor:master, r=Mark-Simulacrum

Remove 'the this' in doc comments.

diff --combined src/libstd/fs.rs
index 594c9d0ff5aed0fd3a8fa98ee136ecb30a011994,9bf90d402564f502024d21a98bd89bbc206999cd..5cea389531f94bd5c2e34c77d02eb5c246fbff8b
--- 1/src/libstd/fs.rs
--- 2/src/libstd/fs.rs
+++ b/src/libstd/fs.rs
@@@ -482,42 -482,20 +482,42 @@@ impl File 
          self.inner.file_attr().map(Metadata)
      }
  
 -    /// Creates a new independently owned handle to the underlying file.
 -    ///
 -    /// The returned `File` is a reference to the same state that this object
 -    /// references. Both handles will read and write with the same cursor
 -    /// position.
 +    /// Create a new `File` instance that shares the same underlying file handle
 +    /// as the existing `File` instance. Reads, writes, and seeks will affect
 +    /// both `File` instances simultaneously.
      ///
      /// # Examples
      ///
 +    /// Create two handles for a file named `foo.txt`:
 +    ///
      /// ```no_run
      /// use std::fs::File;
      ///
      /// # fn foo() -> std::io::Result<()> {
 -    /// let mut f = File::open("foo.txt")?;
 -    /// let file_copy = f.try_clone()?;
 +    /// let mut file = File::open("foo.txt")?;
 +    /// let file_copy = file.try_clone()?;
 +    /// # Ok(())
 +    /// # }
 +    /// ```
 +    ///
 +    /// Assuming there’s a file named `foo.txt` with contents `abcdef\n`, create
 +    /// two handles, seek one of them, and read the remaining bytes from the
 +    /// other handle:
 +    ///
 +    /// ```no_run
 +    /// use std::fs::File;
 +    /// use std::io::SeekFrom;
 +    /// use std::io::prelude::*;
 +    ///
 +    /// # fn foo() -> std::io::Result<()> {
 +    /// let mut file = File::open("foo.txt")?;
 +    /// let mut file_copy = file.try_clone()?;
 +    ///
 +    /// file.seek(SeekFrom::Start(3))?;
 +    ///
 +    /// let mut contents = vec![];
 +    /// file_copy.read_to_end(&mut contents)?;
 +    /// assert_eq!(contents, b"def\n");
      /// # Ok(())
      /// # }
      /// ```
@@@ -1023,7 -1001,7 +1023,7 @@@ impl Metadata 
          self.0.accessed().map(FromInner::from_inner)
      }
  
-     /// Returns the creation time listed in the this metadata.
+     /// Returns the creation time listed in this metadata.
      ///
      /// The returned value corresponds to the `birthtime` field of `stat` on
      /// Unix platforms and the `ftCreationTime` field on Windows platforms.