fasm: add page

[CEO-netizen]

• [yes] The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• [yes] The page(s) have at most 8 examples.
• [yes] The page description(s) have links to documentation or a homepage.
• [yes] The page(s) follow the content guidelines.
• [yes] The page(s) follow the style guide.
• [ yes] The PR title conforms to the recommended templates.
• Version of the command being documented (if known):
  version 1.73.32

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Gage Singleton seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[tldr-bot]

The build for this PR failed with the following error(s) at commit
bb381a1ae52dc7e4b407126f8bde8a4367c9847d:

pages/linux/fasm.md:
Error: Parse error on line 28:
...- Aditional flags: -m <limit>         s
----------------------^
Expecting 'NEWLINE', 'BACKTICK', got 'DASH'
pages/linux/fasm.md:27: TLDR014 Page should contain no trailing whitespace
pages/linux/fasm.md:28: TLDR002 A single space should precede a sentence

Please fix the error(s) and push again.

[Managor]

Suggested change

	- Assemble an x86 or x86-64 assembly file into a binary (default output is `a.out` or specified name):
	- Assemble an x86 or x86-64 assembly file into a binary (default output is `a.out`):

[Managor]

Suggested change

	- Assemble a 64-bit ELF Linux executable:
	`fasm {{hello.asm}}`

Redundant with the first example

[Managor]

Suggested change

	- Show FASM version:
	`fasm -v`
	- Display help:
	`fasm`
	- Display help:
	`fasm`
	- Display version:
	`fasm -v`

As per style guide

[Managor]

Sign the CLA or we won't be able to merge this.