Auto merge of #13364 - linyihai:fetch-remove-offline, r=weihanglo

doc: Hide `cargo-fetch` description in offline man page

### What does this PR try to resolve?
Fixes #13232

### How should we test and review this PR?
Suggest review commit by commit.

### Additional information
r? `@weihanglo`

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

@@ -91,8 +91,7 @@ OPTIONS
            Beware that this may result in different dependency resolution than
            online mode. Cargo will restrict itself to crates that are
            downloaded locally, even if there might be a newer version as
-           indicated in the local copy of the index. See the cargo-fetch(1)
-           command to download dependencies before going offline.
+           indicated in the local copy of the index.
 
            May also be specified with the net.offline config value
            <https://doc.rust-lang.org/cargo/reference/config.html>.

src/doc/man/includes/options-locked.md

@@ -18,8 +18,10 @@ proceed without the network if possible.
 Beware that this may result in different dependency resolution than online
 mode. Cargo will restrict itself to crates that are downloaded locally, even
 if there might be a newer version as indicated in the local copy of the index.
+{{#if (ne command "fetch")}}
 See the {{man "cargo-fetch" 1}} command to download dependencies before going
 offline.
+{{/if}}
 
 May also be specified with the `net.offline` [config value](../reference/config.html).
-{{/option}}
+{{/option}}

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

@@ -97,9 +97,7 @@ the network is not available. With this flag, Cargo will attempt to
 proceed without the network if possible.</p>
 <p>Beware that this may result in different dependency resolution than online
 mode. Cargo will restrict itself to crates that are downloaded locally, even
-if there might be a newer version as indicated in the local copy of the index.
-See the <a href="cargo-fetch.html">cargo-fetch(1)</a> command to download dependencies before going
-offline.</p>
+if there might be a newer version as indicated in the local copy of the index.</p>
 <p>May also be specified with the <code>net.offline</code> <a href="../reference/config.html">config value</a>.</dd>
 
 </dl>

src/etc/man/cargo-fetch.1

@@ -106,8 +106,6 @@ proceed without the network if possible.
 Beware that this may result in different dependency resolution than online
 mode. Cargo will restrict itself to crates that are downloaded locally, even
 if there might be a newer version as indicated in the local copy of the index.
-See the \fBcargo\-fetch\fR(1) command to download dependencies before going
-offline.
 .sp
 May also be specified with the \fBnet.offline\fR \fIconfig value\fR <https://doc.rust\-lang.org/cargo/reference/config.html>\&.
 .RE