Trac #34134: typo "infintiy" in docstring of r interface

Lines 347-348 of `src/sage/interfaces/r.py` are
{{{
    The conversion can handle "not a number", infintiy, imaginary values
and
    missing values:
}}}
This ticket will correct the typo "infintiy" to "infinity".

(Discovered while investigating #31300.)

URL: https://trac.sagemath.org/34134
Reported by: gh-DaveWitteMorris
Ticket author(s): Amritanshu Prasad
Reviewer(s): Dave Morris

Author: Release Manager

build/pkgs/configure/checksums.ini

@@ -1,4 +1,4 @@
 tarball=configure-VERSION.tar.gz
-sha1=4dc25b05edc28e9b3436019a0245925c0b3cd2b4
-md5=512d3f6fe25eb62a4055c4115f4afdd8
-cksum=3390252657
+sha1=41f4f552c7a5a508c229d1d2741215a1790a1520
+md5=dad74f799c46137f5d13da804da284b5
+cksum=605908675

build/pkgs/configure/package-version.txt

@@ -1 +1 @@
-8ef36794c478a588479e16472c4964d034c294ad
+b7acb5c14a6a13a8dd8fc8382a7f5adc0119910a

src/sage/interfaces/r.py

@@ -343,7 +343,7 @@ def _setup_r_to_sage_converter():
         sage: r.options(width="60").sage()  # optional - rpy2
         {'DATA': {'width': 60}, '_Names': 'width'}
 
-    The conversion can handle "not a number", infintiy, imaginary values and
+    The conversion can handle "not a number", infinity, imaginary values and
     missing values::
 
         sage: r(-17).sqrt().sage()  # optional - rpy2