🥢 Correct rounding direction comments in FixedPointMathLib.sol

[atarpara]

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• Ran forge fmt?
• Ran forge test?

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[github-actions]

Gas Snapshot Comparison Report

Generated at commit : 71a8a94, Compared to commit : 4225d5f

Contract Name	Test Name	Main Gas	PR Gas	Diff
FixedPointMathLibTest	testAbs()	698	676	-22
	testAbsEdgeCases()	490	468	-22
	testAvgEdgeCase()	445	490	45
	testCbrtWadConverged()	24191	24211	20
	testCbrtWadDebug()	7369	7325	-44
	testDist()	675	631	-44
	testDistEdgeCases()	567	523	-44
	testDivWadUp()	2949	2927	-22
	testDivWadUpEdgeCases()	446	469	23
	testDivWadUpZeroDenominatorReverts()	3945	3967	22
	testDivWadZeroDenominatorReverts()	3948	3966	18
	testFactorial()	97524	97546	22
	testFullMulDiv()	1099	1143	44
	testFullMulDivUnchecked()	1622	1578	-44
	testFullMulDivUpRevertsIfRoundedUpResultOverflowsCase1()	4450	4517	67
	testFullMulDivUpRevertsIfRoundedUpResultOverflowsCase2()	4494	4516	22
	testInvMod()	12885	12908	23
	testLambertW0WadMonoDebug()	769090	769068	-22
	testLambertW0WadMonotonicallyIncreasing()	18356886	18356909	23
	testLambertW0WadMonotonicallyIncreasing2()	4030663	4030641	-22
	testLambertW0WadRevertsForOutOfDomain()	112923	112681	-242
	testLerpInt()	6410	6455	45
	testLerpUint()	6413	6369	-44
	testLnWad()	2071	2094	23
	testLnWadNegativeReverts()	11231	11165	-66
	testLnWadOverflowReverts()	4037	4014	-23
	testLnWadSmall()	2703	2681	-22
	testLog10()	75973	75929	-44
	testLog10Up()	4408	4364	-44
	testLog256()	22804	22826	22
	testLog2Up()	318958	318981	23
	testMulDiv()	1911	1867	-44
	testMulDivEdgeCases()	755	733	-22
	testMulDivUpEdgeCases()	831	854	23
	testMulDivUpZeroDenominator()	4041	4019	-22
	testMulDivZeroDenominatorReverts()	4018	3996	-22
	testMulSqrt()	1941009	1940987	-22
	testMulWadEdgeCases()	695	718	23
	testMulWadUp()	778	801	23
	testMulWadUpEdgeCases()	768	791	23
	testRPow()	3283	3306	23
	testRPowOverflowReverts()	13229	13119	-110
	testSDivWad()	858	836	-22
	testSMulWad()	1028	1048	20
	testSaturatingAdd()	1491	1492	1
	testSaturatingMul()	1599	1622	23
	testSci()	1828180	1828158	-22
	testSqrt()	45390	45435	45
	testSqrtHashedSingle()	54630	54586	-44
	testSqrtWad()	7914	7936	22
	test__codesize()	60859	62241	1382
	testRawSDivWadEdgeCases()	-	11346	-
	testRawSMulWadEdgeCases()	-	4232	-
	testSDivWadRoundsTowardsZero()	-	1183	-
	testSMulWadRoundsTowardsZero()	-	1783	-