Auto merge of #9309 - sciguy16:out_dir_issue_url, r=ehuss

Make the URL to the tracking issue for `--out-dir` into a link

Author: bors

src/doc/man/cargo-build.md

@@ -48,7 +48,7 @@ Copy final artifacts to this directory.
 This option is unstable and available only on the
 [nightly channel](https://doc.rust-lang.org/book/appendix-07-nightly-rust.html)
 and requires the `-Z unstable-options` flag to enable.
-See https://github.com/rust-lang/cargo/issues/6790 for more information.
+See <https://github.com/rust-lang/cargo/issues/6790> for more information.
 {{/option}}
 
 {{/options}}

src/doc/man/generated_txt/cargo-build.txt

@@ -160,7 +160,8 @@ OPTIONS
            This option is unstable and available only on the nightly channel
            <https://doc.rust-lang.org/book/appendix-07-nightly-rust.html> and
            requires the -Z unstable-options flag to enable. See
-           https://github.com/rust-lang/cargo/issues/6790 for more information.
+           <https://github.com/rust-lang/cargo/issues/6790> for more
+           information.
 
    Display Options
        -v, --verbose

src/doc/src/commands/cargo-build.md

@@ -206,7 +206,7 @@ Defaults to <code>target</code> in the root of the workspace.</dd>
 <p>This option is unstable and available only on the
 <a href="https://doc.rust-lang.org/book/appendix-07-nightly-rust.html">nightly channel</a>
 and requires the <code>-Z unstable-options</code> flag to enable.
-See https://github.com/rust-lang/cargo/issues/6790 for more information.</dd>
+See <a href="https://github.com/rust-lang/cargo/issues/6790">https://github.com/rust-lang/cargo/issues/6790</a> for more information.</dd>
 
 
 </dl>

src/etc/man/cargo-build.1

@@ -192,7 +192,7 @@ Copy final artifacts to this directory.
 This option is unstable and available only on the
 \fInightly channel\fR <https://doc.rust\-lang.org/book/appendix\-07\-nightly\-rust.html>
 and requires the \fB\-Z unstable\-options\fR flag to enable.
-See https://github.com/rust\-lang/cargo/issues/6790 for more information.
+See <https://github.com/rust\-lang/cargo/issues/6790> for more information.
 .RE
 .SS "Display Options"
 .sp