docs(paper.bib): resolve last 3 editorialbot DOI flags

Final pass on the 3 remaining MISSING-DOI entries from JOSS issue #10604.
Each verified across doi.org resolver + Crossref REST + Crossref reverse
title-search + OpenAlex independent index.

Updated:
- schwab2013ltmle -> lendle2017ltmle: upgrade from CRAN package metadata DOI
  (10.32614/cran.package.ltmle, type=dataset) to the peer-reviewed software
  paper in Journal of Statistical Software 81(1), 2017, DOI 10.18637/jss.v081.i01.
  Same four authors; Lendle is first in the published version, hence the
  bibkey rename. Also updates the docstring reference in
  src/statspai/tmle/ltmle.py to the new bibkey and citation string.
- ado2019shift: strip the trailing '*' from the title. The asterisk is the
  QJE typographic footnote marker for acknowledgments, not part of the
  title. Removing it (a) matches standard citation practice and (b) lets
  the editorialbot's title-based fuzzy matcher correctly resolve the entry
  against the already-correct QJE DOI 10.1093/qje/qjz025 (QJE 134(4):
  1949-2010, 2019), instead of suggesting the older NBER WP DOI
  10.3386/w24944 as an alternative.

Not changed (verified to be unfixable, not a defect):
- westfall1993resampling: the 1993 Wiley-Interscience book has no DOI.
  Crossref reverse search filtered by type:book returns no match for
  "Westfall Young Resampling-Based Multiple Testing", OpenAlex returns no
  hits, and the bot-suggested 10.2307/2533464 is verifiably a 1994
  Biometrics 50(4):1226 book review by M.A. Martin of this book, not the
  book itself. Per CLAUDE.md section 10 (zero hallucination), the entry
  keeps its ISBN-only form (978-0-471-55761-6); fabricating a DOI is
  strictly worse than leaving the field blank.

Refs verified via doi.org + Crossref REST + Crossref reverse search +
OpenAlex (4 independent checkpoints per claimed DOI).

Author: brycewang-stanford

paper.bib

@@ -2370,12 +2370,14 @@ @article{mcdermott2022etwfe
   doi={10.32614/cran.package.etwfe}
 }
 
-@article{schwab2013ltmle,
-  title={ltmle: Longitudinal Targeted Maximum Likelihood Estimation},
-  author={Schwab, Joshua and Lendle, Samuel and Petersen, Maya and van der Laan, Mark},
-  journal={CRAN: Contributed Packages},
-  year={2013},
-  doi={10.32614/cran.package.ltmle}
+@article{lendle2017ltmle,
+  title={ltmle: An {R} Package Implementing Targeted Minimum Loss-Based Estimation for Longitudinal Data},
+  author={Lendle, Samuel D. and Schwab, Joshua and Petersen, Maya L. and van der Laan, Mark J.},
+  journal={Journal of Statistical Software},
+  volume={81},
+  number={1},
+  year={2017},
+  doi={10.18637/jss.v081.i01}
 }
 
 @article{wang2019minimal,
@@ -2395,7 +2397,7 @@ @article{abadie2015comparative
 }
 
 @article{ado2019shift,
-  title={Shift-Share Designs: Theory and Inference*},
+  title={Shift-Share Designs: Theory and Inference},
   author={Adão, Rodrigo and Kolesár, Michal and Morales, Eduardo},
   journal={The Quarterly Journal of Economics},
   year={2019},

src/statspai/tmle/ltmle.py

@@ -47,8 +47,9 @@
 time point interventions." *The International Journal of Biostatistics*,
 8(1). [@vanderlaan2012targeted]
 
-Schwab, J., Lendle, S., Petersen, M., & van der Laan, M. J. (2014).
-ltmle: Longitudinal Targeted Maximum Likelihood Estimation (R package). [@schwab2013ltmle]
+Lendle, S. D., Schwab, J., Petersen, M. L., & van der Laan, M. J. (2017).
+"ltmle: An R Package Implementing Targeted Minimum Loss-Based Estimation
+for Longitudinal Data." *Journal of Statistical Software*, 81(1). [@lendle2017ltmle]
 """
 
 from __future__ import annotations