Update param labels for big parameters table

[jdebacker]

This PR updates some the tex code for parameter labels to improve formatting.

[jdebacker]

Example (note, GitHub markdown doesn't render some of the variable names if they have an underscore in them):

Symbol	Description	Value
$\texttt{start_year}$	Initial year	2023
$\omega_{s,t}$	Population by age over time	Too large to report here, see default parameters JSON
$i_{s,t}$	Immigration rates by age	Too large to report here, see default parameters JSON
$\rho_{s,t}$	Mortality rates by age	Too large to report here, see default parameters JSON
$e_{j,s,t}$	Deterministic ability process	Too large to report here, see default parameters JSON
$\lambda_{j}$	Lifetime income group percentages	Too large to report here, see default parameters JSON
$J$	Number of lifetime income groups	7
$S$	Maximum periods in economically active individual life	80
$E$	Number of periods of youth economically outside the model	20
$T$	Number of periods to steady-state	320
$R$	Retirement age	[65.000...65.000]
$\tilde{l}$	Maximum hours of labor supply	1.000
$\beta$	Discount factor	[0.960...0.960]
$\sigma$	Coefficient of constant relative risk aversion	1.500
$\nu$	Frisch elasticity of labor supply	0.400
$b$	Scale parameter in utility of leisure	0.573
$\upsilon$	Shape parameter in utility of leisure	2.856
$\chi^{n}_{s}$	Disutility of labor level parameters	Too large to report here, see default parameters JSON
$\chi^{b}_{j}$	Utility of bequests level parameters	[80.000...80.000]
$\texttt{use_zeta}$	Whether to distribute bequests between lifetime income groups	0.00E+00
$\zeta$	Distribution of bequests	Too large to report here, see default parameters JSON
$Z_{t}$	Total factor productivity	Too large to report here, see default parameters JSON
$\gamma$	Capital share of income	[0.588...0.588]
$\varepsilon$	Elasticity of substitution between capital and labor	[1.000...1.000]
$\delta$	Capital depreciation rate	0.050
$g_{y}$	Growth rate of labor augmenting technological progress	0.036
$\texttt{tax_func_type}$	Functional form used for income tax functions	linear
$\texttt{analytical_mtrs}$	Whether use analytical MTRs or estimate MTRs	0.00E+00
$\texttt{age_specific}$	Whether use age-specific tax functions	1.000
$\tau^{p}_{t}$	Payroll tax rate	[0.140...0.140]
$\tau^{BQ}_{t}$	Bequest (estate) tax rate	[0.200...0.200]
$\tau^{b}_{t}$	Entity-level business income tax rate	Too large to report here, see default parameters JSON
$\delta^{\tau}_{t}$	Rate of depreciation for tax purposes	Too large to report here, see default parameters JSON
$\tau^{c}_{t,s,j}$	Consumption tax rates	Too large to report here, see default parameters JSON
$H$	Coefficient on linear term in wealth tax function	[0.100...0.100]
$M$	Constant in wealth tax function	[1.000...1.000]
$P$	Coefficient on level term in wealth tax function	[0.000...0.000]
$\texttt{budget_balance}$	Whether have a balanced budget in each period	0.00E+00
$\texttt{baseline_spending}$	Whether level of spending constant between the baseline and reform runs	0.00E+00
$\alpha^{T}_{t}$	Transfers as a share of GDP	[0.097...0.097]
$\eta_{j,s,t}$	Distribution of transfers	Too large to report here, see default parameters JSON
$\alpha^{G}_{t}$	Government spending as a share of GDP	[0.142...0.142]
$t_{G1}$	Model period in which budget closure rule starts	20
$t_{G2}$	Model period in which budget closure rule ends	256
$\rho_{G}$	Budget closure rule smoothing parameter	0.100
$\bar{\alpha}_{D}$	Steady-state Debt-to-GDP ratio	1.000
$\alpha_{D,0}$	Initial period Debt-to-GDP ratio	0.600
$\tau_{d,t}$	Scale parameter in government interest rate wedge	[0.245...0.245]
$\mu_{d,t}$	Shift parameter in government interest rate wedge	[-0.034...-0.034]
$\texttt{avg_earn_num_years}$	Number of years over which compute average earnings for pension benefit	35
$\texttt{AIME_bkt_1}$	First AIME bracket threshold	749.000
$\texttt{AIME_bkt_2}$	Second AIME bracket threshold	4517.000
$\texttt{PIA_rate_bkt_1}$	First AIME bracket PIA rate	0.00E+00
$\texttt{PIA_rate_bkt_2}$	Second AIME bracket PIA rate	0.00E+00
$\texttt{PIA_rate_bkt_3}$	Third AIME bracket PIA rate	0.00E+00
$\texttt{PIA_maxpayment}$	Maximum PIA payment	0.00E+00
$\texttt{PIA_minpayment}$	Minimum PIA payment	0.00E+00
$\theta_{adj,t}$	Adjustment to replacement rate	[1.000...1.000]
$r^{*}_{t}$	World interest rate	[0.040...0.040]
$D_{f,0}$	Share of government debt held by foreigners in initial period	0.146
$\zeta_{D, t}$	Share of new debt issues purchased by foreigners	[0.146...0.146]
$\zeta_{K, t}$	Share of excess capital demand satisfied by foreigners	[0.900...0.900]
$\xi$	Dampening parameter for TPI	0.400
$\texttt{maxiter}$	Maximum number of iterations for TPI	250
$\texttt{mindist_SS}$	SS solution tolerance	1.00E-09
$\texttt{mindist_TPI}$	TPI solution tolerance	1.00E-05

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.98%. Comparing base (32f2593) to head (0640fbc).
Report is 3 commits behind head on master.

Additional details and impacted files

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- Coverage   71.08%   69.98%   -1.11%     
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- Hits         3538     3483      -55     
- Misses       1439     1494      +55     

Flag	Coverage Δ
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Files	Coverage Δ
ogcore/constants.py	100.00% <ø> (ø)

... and 4 files with indirect coverage changes