[docs] [issue17265] Fix code highlight in the string.Template example

[Roundup Robot]

Roundup Robot added the comment:

New changeset 943ea41d3ceb by Ezio Melotti in branch '2.7':
#17265: fix highlight in template example.  Initial patch by Berker Peksag.
http://hg.python.org/cpython/rev/943ea41d3ceb

New changeset 1b9de5788698 by Ezio Melotti in branch '3.2':
#17265: fix highlight in template example.  Initial patch by Berker Peksag.
http://hg.python.org/cpython/rev/1b9de5788698

New changeset 0e2d89f34ae5 by Ezio Melotti in branch '3.3':
#17265: merge with 3.2.
http://hg.python.org/cpython/rev/0e2d89f34ae5

New changeset a11ddd687a0b by Ezio Melotti in branch 'default':
#17265: merge with 3.3.
http://hg.python.org/cpython/rev/a11ddd687a0b

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nosy: +python-dev

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<http://bugs.python.org/issue17265>
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