doc detail as suggested

Co-authored-by: Travis Scrimshaw <[email protected]>

Author: fchapoton

src/sage/rings/infinity.py

@@ -486,8 +486,7 @@ def __float__(self):
         r"""
         Generate a floating-point infinity.
 
-        The printing of
-        floating-point infinity varies across platforms.
+        The printing of floating-point infinity varies across platforms.
 
         EXAMPLES::