refact: fix comments

Author: boriel

src/arch/z80/backend/_parray.py

@@ -284,8 +284,8 @@ def _pastoref(ins: Quad) -> list[str]:
 
 def _pastorestr(ins: Quad) -> list[str]:
     """Stores a string value into a memory address.
-    It copies content of 2nd operand (string), into 1st, reallocating
-    dynamic memory for the 1st str. These instruction DOES ALLOW
+    It copies the content of the 2nd operand (string), into 1st, reallocating
+    dynamic memory for the 1st str. These instructions DO ALLOW
     immediate strings for the 2nd parameter, starting with '#'.
     """
     output = _paddr(ins[1])

src/symbols/sentence.py

@@ -29,5 +29,5 @@ def args(self):
 
     @property
     def token(self):
-        """Sentence takes it's token from the keyword not from it's name"""
+        """Sentence takes its token from the keyword not from its name"""
         return self.keyword

src/zxbc/zxbparser.py

@@ -371,7 +371,7 @@ def make_call(id_: str, lineno: int, args: sym.ARGLIST):
     - a(4) can be a string slice if 'a' is a string variable: a$(4)
     - a(4) can be an access to an array if 'a' is an array
 
-    This function will inspect the id_. If it is undeclared then
+    This function will inspect the id_. If it is undeclared, then
     id_ will be taken as a forwarded function.
     """
     if args is None: