Fix up small typo

Replace `intendation` with `indentation`.
diff --git a/lib/yaml/scanner.py b/lib/yaml/scanner.py
index 5126cf0..098ea7b 100644
--- a/lib/yaml/scanner.py
+++ b/lib/yaml/scanner.py
@@ -332,7 +332,7 @@
         ## }
         #if self.flow_level and self.indent > column:
         #    raise ScannerError(None, None,
-        #            "invalid intendation or unclosed '[' or '{'",
+        #            "invalid indentation or unclosed '[' or '{'",
         #            self.get_mark())
 
         # In the flow context, indentation is ignored. We make the scanner less
@@ -370,7 +370,7 @@
 
     def fetch_stream_end(self):
 
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys.
@@ -389,7 +389,7 @@
 
     def fetch_directive(self):
         
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys.
@@ -407,7 +407,7 @@
 
     def fetch_document_indicator(self, TokenClass):
 
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys. Note that there could not be a block collection
diff --git a/lib3/yaml/scanner.py b/lib3/yaml/scanner.py
index 775dbcc..7437ede 100644
--- a/lib3/yaml/scanner.py
+++ b/lib3/yaml/scanner.py
@@ -332,7 +332,7 @@
         ## }
         #if self.flow_level and self.indent > column:
         #    raise ScannerError(None, None,
-        #            "invalid intendation or unclosed '[' or '{'",
+        #            "invalid indentation or unclosed '[' or '{'",
         #            self.get_mark())
 
         # In the flow context, indentation is ignored. We make the scanner less
@@ -370,7 +370,7 @@
 
     def fetch_stream_end(self):
 
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys.
@@ -389,7 +389,7 @@
 
     def fetch_directive(self):
         
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys.
@@ -407,7 +407,7 @@
 
     def fetch_document_indicator(self, TokenClass):
 
-        # Set the current intendation to -1.
+        # Set the current indentation to -1.
         self.unwind_indent(-1)
 
         # Reset simple keys. Note that there could not be a block collection