Fix broken markdown link to a notebook (#362)

* Fix notebook filename in markdown link

* Well behaved text files end with newline

* Strip tail blanks from markdown files

CONTRIBUTING.md

@@ -26,4 +26,4 @@ information on using pull requests.
 ## Community Guidelines
 
 This project follows
-[Google's Open Source Community Guidelines](https://opensource.google/conduct/).
+[Google's Open Source Community Guidelines](https://opensource.google/conduct/).

docs/fermi_hubbard/index.md

@@ -15,4 +15,3 @@ in [arXiv:2010.07965](https://arxiv.org/abs/2010.07965) **[quant-ph]**:
   analysis of results from the data set which was released together with the publication.
   The data set consists of four zip files and can be accessed at 
   [https://doi.org/10.5061/dryad.crjdfn32v](https://doi.org/10.5061/dryad.crjdfn32v).
-

docs/guide/best_practices.md

@@ -41,4 +41,3 @@ Be exhaustive in metadata pertaining to your experiment. You should likely
 be saving job ids, calibration ids, durations of various parts of your
 task, circuits, and more. By default, a timestamp is saved with each
 file.
-

docs/qaoa/index.md

@@ -20,5 +20,3 @@ and analyze the results. Please read on to learn about:
 
 See the left navigation for more information about the QAOA experiment
 and how to run it end-to-end.
-
-

docs/qcqmc/index.md

@@ -9,7 +9,7 @@ this paper, it was shown that a quantum computer could be used to prepare
 complicated trial wavefunctions in order to unbias the classical results. 
 
 ## Code Overview
-The [Code Overview](./high-level.ipynb) notebook introduces the basic structure
+The [Code Overview](./high_level.ipynb) notebook introduces the basic structure
 of the code provided in recirq to generate the trial wavefunction's prepare in the [QCQMC paper](https://www.nature.com/articles/s41586-021-04351-z).
 
 ## End-to-End
@@ -23,4 +23,4 @@ paper.
 
 The [Experimental Wavefunctions](./experimental_wavefunctions.ipynb) notebook demonstrates
 how to download and analyze the experimental wavefunctions, which can reproduce
-the results in [QCQMC](https://www.nature.com/articles/s41586-021-04351-z).
+the results in [QCQMC](https://www.nature.com/articles/s41586-021-04351-z).

recirq/qml_lfe/README.md

@@ -17,5 +17,3 @@ To generate bitstring data for an 8-qubit experiment on learning physical states
 `python3 -m recirq.qml_lfe.learn_states_c.py --n=8`
 
 `python3 -m recirq.qml_lfe.learn_states_q.py --n=8`
-
-

recirq/third_party/quaff/README.md

@@ -8,4 +8,4 @@ Group](https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=9435351).
 
 # Author
 
-Bryan A. O'Gorman, U.C. Berkeley with incremental contributions from Bill Huggins (Google).
+Bryan A. O'Gorman, U.C. Berkeley with incremental contributions from Bill Huggins (Google).