fix: Polish function call and unit type docs (#8995)

Author: kilavvy

docs/reference/src/components/cairo/modules/language_constructs/pages/function-calls.adoc

@@ -64,7 +64,7 @@ Arguments can also be specified explicitly by the parameter name.
 For example `inc_3(x: 7)`.
 This is called a "named argument" and it verifies that the name of the parameter is correct,
 to prevent mistakes.
-For example, a call to `inc_3(y: 7)` would not compile
+For example, a call to `inc_3(y: 7)` would not compile.
 - If you use a variable as an argument and its name is the same as the parameter name, a
 shorthand for writing `inc_3(x: x)` is to simply write `inc_3(:x)`.
 This lets you write the name only once, but still verifies it.

docs/reference/src/components/cairo/modules/language_constructs/pages/unit-type.adoc

@@ -1,6 +1,5 @@
 = Unit type
 
-A _unit type_ is a type which has only one value (xref:literal-expressions.adoc[unit literal], `
-()`).
+A _unit type_ is a type which has only one value (xref:literal-expressions.adoc[unit literal], `()`).
 It is represented by a tuple with no elements.
 Its size is always zero, and it is guaranteed to not exist in the compiled code.