fix(cheat): don't use a pager when no cheat sheet found for the command

[figsoda]

Description

cheat.sh doesn't return 404: chubin/cheat.sh#198

Motivation and Context

How Has This Been Tested?

$ cargo run plz 42
   Compiling halp v0.1.3 (/home/figsoda/halp)
    Finished dev [unoptimized + debuginfo] target(s) in 0.37s
     Running `target/debug/halp plz 42`
❤ Select operation · Show cheat sheet
Unknown topic.
Do you mean one of these topics maybe?

    * m4 50
    * p4 50
    * r2 50
    

(ﾉ´ヮ`)ﾉ*: ･ﾟ
 Select operation ›
  Show man page
✧ Show cheat sheet
  Exit

Screenshots / Logs (if applicable)

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Patch coverage: 66.67% and project coverage change: -0.06 ⚠️

Comparison is base (0ab80fe) 79.83% compared to head (9156919) 79.76%.

❗ Current head 9156919 differs from pull request most recent head f3178a7. Consider uploading reports for the commit f3178a7 to get more accurate results

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #10      +/-   ##
==========================================
- Coverage   79.83%   79.76%   -0.06%     
==========================================
  Files          14       14              
  Lines         575      578       +3     
==========================================
+ Hits          459      461       +2     
- Misses        116      117       +1     

Impacted Files	Coverage Δ
src/error.rs	100.00% <ø> (ø)
src/helper/docs/cheat.rs	68.09% <66.67%> (-0.09%)	⬇️

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[orhun]

bors r+

[bors]

Build succeeded:

• Build on macos-11 (aarch64-apple-darwin)
• Build on macos-11 (x86_64-apple-darwin)
• Build on ubuntu-22.04 (aarch64-unknown-linux-gnu)
• Build on ubuntu-22.04 (aarch64-unknown-linux-musl)
• Build on ubuntu-22.04 (arm-unknown-linux-gnueabi)
• Build on ubuntu-22.04 (arm-unknown-linux-gnueabihf)
• Build on ubuntu-22.04 (armv5te-unknown-linux-gnueabi)
• Build on ubuntu-22.04 (armv7-unknown-linux-gnueabihf)
• Build on ubuntu-22.04 (i686-unknown-linux-gnu)
• Build on ubuntu-22.04 (i686-unknown-linux-musl)
• Build on ubuntu-22.04 (x86_64-unknown-linux-gnu)
• Build on ubuntu-22.04 (x86_64-unknown-linux-musl)
• Build on windows-2022 (x86_64-pc-windows-msvc)
• Lint
• Test