chore: remove references to yarn in docs

📊 Tachometer Benchmark Results

emoji-picker-element-change-tab: unsure 🔍 -1% - +1% (-0.45ms - +0.41ms)
^{this-change vs tip-of-tree}
emoji-picker-element-database-interactions: unsure 🔍 -5% - +7% (-5.13ms - +6.67ms)
^{this-change vs tip-of-tree}
emoji-picker-element-first-load: unsure 🔍 -1% - +6% (-0.65ms - +3.21ms)
^{this-change vs tip-of-tree}
emoji-picker-element-search: unsure 🔍 -0% - +0% (-0.01ms - +0.07ms)
^{this-change vs tip-of-tree}
emoji-picker-element-second-load: unsure 🔍 -5% - +6% (-1.93ms - +2.29ms)
^{this-change vs tip-of-tree}

emoji-picker-element-change-tab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	33.15ms - 33.95ms	-	unsure 🔍 -1% - +1% -0.45ms - +0.41ms
tip-of-tree tip-of-tree	33.41ms - 33.72ms	unsure 🔍 -1% - +1% -0.41ms - +0.45ms	-

emoji-picker-element-database-interactions

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	98.73ms - 107.37ms	-	unsure 🔍 -5% - +7% -5.13ms - +6.67ms
tip-of-tree tip-of-tree	98.26ms - 106.31ms	unsure 🔍 -6% - +5% -6.67ms - +5.13ms	-

emoji-picker-element-first-load

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	53.52ms - 56.21ms	-	unsure 🔍 -1% - +6% -0.65ms - +3.21ms
tip-of-tree tip-of-tree	52.19ms - 54.96ms	unsure 🔍 -6% - +1% -3.21ms - +0.65ms	-

emoji-picker-element-search

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	50.04ms - 50.09ms	-	unsure 🔍 -0% - +0% -0.01ms - +0.07ms
tip-of-tree tip-of-tree	50.01ms - 50.07ms	unsure 🔍 -0% - +0% -0.07ms - +0.01ms	-

emoji-picker-element-second-load

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	35.74ms - 38.78ms	-	unsure 🔍 -5% - +6% -1.93ms - +2.29ms
tip-of-tree tip-of-tree	35.61ms - 38.55ms	unsure 🔍 -6% - +5% -2.29ms - +1.93ms	-