Add field descriptions for scamper1 datatype

[SaiedKazemi]

This change is 

[coveralls]

Pull Request Test Coverage Report for Build 7201

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 4 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.03%) to 64.421%

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Files with Coverage Reduction	New Missed Lines	%
active/active.go	4	88.54%
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Totals
Change from base Build 7197:	-0.03%
Covered Lines:	3902
Relevant Lines:	6057

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💛 - Coveralls

[SaiedKazemi]

@cristinaleonr I forgot to mention in the pull request that the file isn't fully complete yet because I couldn't find descriptions for everything in samper header files. Therefore, please consider this as the first step toward providing descriptions for all fields as we learn more ourselves. @stephen-soltesz Just FYI...

[SaiedKazemi]

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schema/descriptions/Scamper1Row.yaml, line 70 at r1 (raw file):

Previously, cristinaleonr (Cristina Leon) wrote…

What is "unresp."?

I think it is short for unresponsive, which I changed to.

[SaiedKazemi]

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schema/descriptions/Scamper1Row.yaml, line 74 at r1 (raw file):

Previously, cristinaleonr (Cristina Leon) wrote…

Should this be capitalized like the others?

Done.

[SaiedKazemi]

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schema/descriptions/Scamper1Row.yaml, line 48 at r1 (raw file):

Previously, cristinaleonr (Cristina Leon) wrote…

Used*

Done.

[SaiedKazemi]

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schema/descriptions/Scamper1Row.yaml, line 132 at r1 (raw file):

Previously, cristinaleonr (Cristina Leon) wrote…

Should this be "ICMP code **of** the reply."?

Done.

[SaiedKazemi]

Thank you @cristinaleonr for your careful review. I fixed the typos. PTAL.