Fix further typos

Day_1/Day_1.jl

@@ -145,7 +145,7 @@ There is a useful syntax to update the value of a variable using an operator act
 
 # ╔═╡ cf08cc65-7a9e-490d-b7e6-eecf6a1d9977
 md"""
-From now on, blocks will be used sometimes when manipulating a varialbe to prevent dependency on execution order in the notebooks.
+From now on, blocks will be used sometimes when manipulating a variable to prevent dependency on execution order in the notebooks.
 
 A block starts with `begin` and ends with `end`. Code in the block should be indented.
 
@@ -710,7 +710,7 @@ end
 
 # ╔═╡ 544368b2-3e39-41e7-97ea-e2bbf44a7749
 md"""
-`elseif` checks for further conditions if the conditions before it were `false`. If the condition is `true`, then the code indentet under it is executed and `else` is ignored. Otherwise, the next `elseif` is checked or `else` is executed if no `elseif` is left.
+`elseif` checks for further conditions if the conditions before it were `false`. If the condition is `true`, then the code indented under it is executed and `else` is ignored. Otherwise, the next `elseif` is checked or `else` is executed if no `elseif` is left.
 
 Sounds complicated. It is best explained with an example.
 """
@@ -1083,7 +1083,7 @@ fill(42, (2, 2, 3))
 md"""
 ## Range
 
-While using `for` loops, we used a synatax like the following:
+While using `for` loops, we used a syntax like the following:
 
 	for i in 1:4