fix: Revise the abstract in the pycon_maintainers_summit_2025.md.

pycon_maintainers_summit_2025.md

@@ -4,13 +4,13 @@
 
 When test cases fail inconsistently without changes to the code under test they
 are flaky. These flaky tests do not clearly indicate the presence or absence of
-software bugs and thus limit the effectiveness of software maintainers. After
-giving concrete examples of flaky tests in real-world Python projects, this talk
-overviews the results from a developer survey finding that 59% claimed to deal
-with flaky tests on a monthly, weekly, or daily basis. After explaining why
-automated test rerunning may not find flaky tests, this talk shows how machine
-learning techniques can automatically find flaky tests, thereby taming the
-fiasco of flaky tests for software maintainers.
+software bugs and thus present serious challenges to software maintainers. After
+giving concrete examples of flaky tests that we found in real-world Python
+projects, this talk overviews the results from a developer survey finding that
+59% claimed to deal with flaky tests on a monthly, weekly, or daily basis. After
+explaining why automated test rerunning may not find flaky tests, this talk
+shows how machine learning techniques can automatically find flaky tests,
+thereby taming the fiasco of flaky tests often faced by software maintainers.
 
 ## Key Takeaways