Fix argument type in docsting

IPython/lib/latextools.py

@@ -64,7 +64,7 b' def latex_to_png(s, encode=False, backend=None, wrap=False):'
 
     Parameters
     ----------
-    s : text
+    s : str
         The raw string containing valid inline LaTeX.
     encode : bool, optional
         Should the PNG data base64 encoded to make it JSON'able.

IPython/utils/tokenutil.py

@@ -31,7 +31,7 b' def line_at_cursor(cell, cursor_pos=0):'
     Parameters
     ----------
     
-    cell: text
+    cell: str
         multiline block of text
     cursor_pos: integer
         the cursor position