fix typos

expr.go

@@ -152,7 +152,7 @@ func flipDoubleNegatives(expr []token) []token {
 func evaluateExpression(expr []token) (int, error) {
 	for _, tok := range expr {
 		if tok.typ == tokText || !tok.IsExpressionTerm() {
-			return 0, fmt.Errorf("unexpected token in expressoin: '%s'", tok)
+			return 0, fmt.Errorf("unexpected token in expression: '%s'", tok)
 		}
 	}
 

graph.go

@@ -2,9 +2,8 @@ package gmars
 
 import "slices"
 
-// buildReferenceGraph takes a map of expresions and builds a map representing
-// a graph of references where each key has a slice of symbols referenced by
-// that symbol's tokens
+// buildReferenceGraph takes a map of expressions and builds a graph of
+// symbol references as a map[string][]token
 func buildReferenceGraph(values map[string][]token) map[string][]string {
 	graph := make(map[string][]string)
 	for key, tokens := range values {

parser.go

@@ -321,7 +321,7 @@ func parsePseudoOp(p *parser) parseStateFn {
 			p.lines = append(p.lines, p.currentLine)
 			return parseLine
 		}
-		p.err = fmt.Errorf("line %d: expected operand expression after psuedo-op '%s', got newline", p.line, lastToken.val)
+		p.err = fmt.Errorf("line %d: expected operand expression after pseudo-op '%s', got newline", p.line, lastToken.val)
 		return nil
 	}