Fixes typos in introduction.txt
Fixes typos in introduction.txt

mverrilli/kombu,cce/kombu,cce/kombu,bmbouter/kombu,romank0/kombu,depop/kombu,andresriancho/kombu,Elastica/kombu,tkanemoto/kombu,mathom/kombu,depop/kombu,numb3r3/kombu,alex/kombu,mathom/kombu,bmbouter/kombu,jindongh/kombu,romank0/kombu,xujun10110/kombu,ZoranPavlovic/kombu,xujun10110/kombu,iris-edu-int/kombu,Elastica/kombu,urbn/kombu,jindongh/kombu,tkanemoto/kombu,andresriancho/kombu,numb3r3/kombu,daevaorn/kombu,daevaorn/kombu,celery/kombu,mverrilli/kombu,iris-edu-int/kombu,ZoranPavlovic/kombu,alex/kombu