Fix minor typos (#286)

- Typos were found by codespell v1.15.0

tests/test_parse_doctype.cpp

@@ -221,7 +221,7 @@ TEST(parse_doctype_xmlconf_ibm_2)
 	TEST_DOCTYPE_NWF("<!DOCTYPE animal [ <!ELEMENT animal ANY> <!ENTITY % parameterE \"A music file ?>\"> <?music %parameterE; ]>");
 	TEST_DOCTYPE_NWF("<!DOCTYPE animal [ <!ELEMENT animal ANY> <!ENTITY % parameterE \"leopard EMPTY>\"> <!ELEMENT %parameterE; ]>");
 	TEST_DOCTYPE_WF("<!DOCTYPE root [ <!ELEMENT root ANY> <!ATTLIST root attr1 CDATA #IMPLIED> <!ATTLIST root attr2 CDATA #IMPLIED> <!ENTITY withlt \"have <lessthan> inside\"> <!ENTITY aIndirect \"&withlt;\"> ]>");
-	TEST_DOCTYPE_WF("<!DOCTYPE root [ <!ELEMENT root (#PCDATA)> <!--* Mising Name S contentspec in elementdecl *--> <!ELEMENT > ]>");
+	TEST_DOCTYPE_WF("<!DOCTYPE root [ <!ELEMENT root (#PCDATA)> <!--* Missing Name S contentspec in elementdecl *--> <!ELEMENT > ]>");
 	TEST_DOCTYPE_WF("<!DOCTYPE root [ <!ELEMENT root (#PCDATA)> <!ELEMENT a ANY> <!ELEMENT b ANY> <!--* extra separator in seq *--> <!ELEMENT aElement ((a|b),,a)? > ]>");
 	TEST_DOCTYPE_WF("<!DOCTYPE root [ <!ELEMENT root (#PCDATA)> <!ELEMENT a ANY> <!--* Missing white space before Name in AttDef *--> <!ATTLIST a attr1 CDATA \"default\"attr2 ID #required> ]>");
 	TEST_DOCTYPE_WF("<!DOCTYPE test [ <!ELEMENT test ANY> <!ELEMENT one EMPTY> <!ELEMENT two EMPTY> <!NOTATION this SYSTEM \"alpha\"> <!ATTLIST three attr NOTATION (\"this\") #IMPLIED> ]>");

tests/test_xpath_operators.cpp

@@ -194,7 +194,7 @@ TEST_XML(xpath_operators_equality_node_set_node_set, "<node><c1><v>a</v><v>b</v>
 	CHECK_XPATH_BOOLEAN(n, STR("c1/v != c3/v"), true);
 	CHECK_XPATH_BOOLEAN(n, STR("c2/v != c3/v"), true);
 	CHECK_XPATH_BOOLEAN(n, STR("c1/v != c4/v"), true);
-	CHECK_XPATH_BOOLEAN(n, STR("c1/v != c5/v"), true); // (a, b) != (a, b), since a != b, as per XPath spec (comparison operators are so not intutive)
+	CHECK_XPATH_BOOLEAN(n, STR("c1/v != c5/v"), true); // (a, b) != (a, b), since a != b, as per XPath spec (comparison operators are so not intuitive)
 	CHECK_XPATH_BOOLEAN(n, STR("c3/v != c6/v"), false);
 	CHECK_XPATH_BOOLEAN(n, STR("c1/v != x"), false);
 	CHECK_XPATH_BOOLEAN(n, STR("x != c1/v"), false);