Fix mixed tabs and spaces in yaml example in README

[marvinhagemeister]

By default GitHub shows a red box indicating a parser error when yaml is indented with tabs. This is in line with the YAML Specification, which lists that tabs are invalid if used for indentation.

This PR resolves that error by converting the tabs to spaces.

[github-actions[bot]]

📊 Tachometer Benchmark Results

Summary

duration

• test_bench: slower ❌ 24% - 28% (34.69ms - 39.26ms)
  ^{base-framework vs fast-framework Customize summary}
• test_bench_2: slower ❌ 9% - 17% (0.32ms - 0.59ms)
  ^{base-framework vs fast-framework Customize summary}

window.usedJSHeapSize

• test_bench: slower ❌ 36% - 37% (0.95ms - 0.95ms)
  ^{base-framework vs fast-framework Customize summary}
• test_bench_2: faster ✔ 8% - 8% (0.09ms - 0.09ms)
  ^{base-framework vs fast-framework Customize summary}

Results

test_bench

• Browser: chrome-headless 84.0.4147.125
• Sample size: 10
• Built by: PR Artifacts For Forks Flow #11
• Commit: 9ed0ad5

duration

Version	Avg time	vs fast-framework	vs base-framework	vs local-framework
fast-framework	137.71ms - 141.73ms	-	faster ✔ 20% - 22% 34.69ms - 39.26ms	faster ✔ 14% - 18% 23.26ms - 31.06ms
base-framework	175.60ms - 177.79ms	slower ❌ 24% - 28% 34.69ms - 39.26ms	-	slower ❌ 4% - 8% 6.30ms - 13.34ms
local-framework	163.53ms - 170.22ms	slower ❌ 16% - 22% 23.26ms - 31.06ms	faster ✔ 4% - 8% 6.30ms - 13.34ms	-

window.usedJSHeapSize

Version	Avg time	vs fast-framework	vs base-framework	vs local-framework
fast-framework	2.61ms - 2.61ms	-	faster ✔ 27% - 27% 0.95ms - 0.95ms	faster ✔ 62% - 62% 4.20ms - 4.21ms
base-framework	3.56ms - 3.57ms	slower ❌ 36% - 37% 0.95ms - 0.95ms	-	faster ✔ 48% - 48% 3.25ms - 3.26ms
local-framework	6.81ms - 6.82ms	slower ❌ 161% - 161% 4.20ms - 4.21ms	slower ❌ 91% - 91% 3.25ms - 3.26ms	-

test_bench_2

• Browser: chrome-headless 84.0.4147.125
• Sample size: 10
• Built by: PR Artifacts For Forks Flow #11
• Commit: 9ed0ad5

duration

Version	Avg time	vs fast-framework	vs base-framework	vs local-framework
fast-framework	3.46ms - 3.70ms	-	faster ✔ 8% - 15% 0.32ms - 0.59ms	slower ❌ 34% - 54% 0.89ms - 1.28ms
base-framework	3.98ms - 4.10ms	slower ❌ 9% - 17% 0.32ms - 0.59ms	-	slower ❌ 52% - 72% 1.38ms - 1.71ms
local-framework	2.34ms - 2.65ms	faster ✔ 26% - 35% 0.89ms - 1.28ms	faster ✔ 34% - 42% 1.38ms - 1.71ms	-

window.usedJSHeapSize

Version	Avg time	vs fast-framework	vs base-framework	vs local-framework
fast-framework	1.09ms - 1.09ms	-	slower ❌ 9% - 9% 0.09ms - 0.09ms	slower ❌ 11% - 11% 0.11ms - 0.11ms
base-framework	1.00ms - 1.00ms	faster ✔ 8% - 8% 0.09ms - 0.09ms	-	slower ❌ 2% - 2% 0.02ms - 0.02ms
local-framework	0.98ms - 0.98ms	faster ✔ 10% - 10% 0.11ms - 0.11ms	faster ✔ 2% - 2% 0.02ms - 0.02ms	-

_{tachometer-reporter-action v2 for PR Artifacts For Forks Flow}