Update index.rst

Author: hweifluids

source/index.rst

@@ -17,7 +17,7 @@ The author currently lacks the capability to develop with OpenCL, so for now onl
 As most computers have larger RAM than GPU memory, the toolkit also supports CPU mode for large datasets on CPU systems.
 Although, the new features would firstly be added to the GPU version, and the CPU version would be updated with a month-scale delay.
 
-For the start, it is strongly suggested to begin with reading the review by Prof. George Haller in regard to LCS `here <https://www.georgehaller.com/reprints/annurev-fluid-010313-141322.pdf>__`, published on Annual Review of Fluid Mechanics, instead of directly use this toolkit without any theoretical foundation.
+For the start, it is strongly suggested to begin with reading the review by Prof. George Haller in regard to LCS `here <https://www.georgehaller.com/reprints/annurev-fluid-010313-141322.pdf>`__, published on Annual Review of Fluid Mechanics, instead of directly use this toolkit without any theoretical foundation.
 Some of the theories can be found in this section, it is more encouraged to learn LCS theories and numerical methods by reading the technical papers.
 
 The author has invested countless off-work hours developing this software, with the goal of making such a powerful turbulence/complex-systems research tool by Professor Haller's team available to a wider audience and, through it, exploring charming phenomena in flow structures and instability. The author is not short of money and therefore does not accept donations or sponsorships. As the *"price"* for using this toolbox, if you publish a paper that employs it, you are asked to notify the author by email. These publications will be collected and listed in the “Articles” section for reference by peers. The author also encourages peers who have cited this toolbox for reference, even if they did not directly use it in their investigation, to inform the authors. Those works will likewise be advertised in the documentation and repository.