capitalized pga and pgv

src/main/resources/gmm/coeffs/AG20_PRVI.csv

     IMT,        a1,       a12
-    pga,  4.096000,  0.676590
+    PGV,         0,         0
+    PGA,  4.096000,  0.676590
   0.010,  4.096000,  0.676590
   0.020,  4.178000,  0.737613
   0.030,  4.273000,  0.798636

src/main/resources/gmm/coeffs/ASK14_PRVI.csv

     IMT,        a1,       a10
-    pgv,  5.488571,  2.276115
-    pga,  0.096076,  1.544800
+    PGV,  5.488571,  2.276115
+    PGA,  0.096076,  1.544800
   0.010,  0.096076,  1.544800
   0.020,  0.143128,  1.485224
   0.030,  0.183180,  1.425649

src/main/resources/gmm/coeffs/BSSA14_PRVI.csv

     IMT,        e0,        e1,        e2,        e3,         c
-    pgv,  4.674031,  4.715031,  4.486031,  4.670031, -0.780817
-    pga,  0.226805,  0.265105,  0.025405,  0.233405, -0.671069
+    PGV,  4.674031,  4.715031,  4.486031,  4.670031, -0.780817
+    PGA,  0.226805,  0.265105,  0.025405,  0.233405, -0.671069
   0.010,  0.232905,  0.271105,  0.031405,  0.239405, -0.671069
   0.020,  0.296903,  0.334513,  0.107993,  0.299673, -0.655327
   0.030,  0.411501,  0.451541,  0.246251,  0.400171, -0.639585

src/main/resources/gmm/coeffs/CB14_PRVI.csv

     IMT,         c0,       c11
-    pgv,  -3.142420,  1.540352
-    pga,  -4.622896,  0.732463
+    PGV,  -3.142420,  1.540352
+    PGA,  -4.622896,  0.732463
   0.010,  -4.571896,  0.732463
   0.020,  -4.553815,  0.799830
   0.030,  -4.228735,  0.867198

src/main/resources/gmm/coeffs/CY14_PRVI.csv

    IMT,        c1,      phi1
-   pgv,  2.034528, -0.790826
-   pga, -1.757322, -0.680903
+   PGV,  2.034528, -0.790826
+   PGA, -1.757322, -0.680903
  0.010, -1.757322, -0.680903
  0.020, -1.718516, -0.664367
  0.030, -1.523810, -0.647830

src/main/resources/gmm/coeffs/KBCG20_PRVI.csv

     IMT, mu_c_1_if, mu_c_1_slab,    mu_c_7
-    pgv,  5.947083,    8.949273,  1.556776
-    pga,  3.215307,    4.289080,  0.890964
+    PGV,  5.947083,    8.949273,  1.556776
+    PGA,  3.215307,    4.289080,  0.890964
   0.010,  3.075653,    4.059572,  0.890964
   0.020,  3.216489,    4.308207,  0.929590
   0.030,  3.519204,    4.667198,  0.968215

src/main/resources/gmm/coeffs/PSBAH20_PRVI.csv

     IMT         c0,    c0slab,        s2
-    pgv   7.724468, 12.821468, -0.763133
-    pga   4.122884,  9.947884, -0.781134
+    PGV   7.724468, 12.821468, -0.763133
+    PGA   4.122884,  9.947884, -0.781134
   0.010   3.754884, 10.002884, -0.781134
   0.020   3.842748, 10.179748, -0.789103
   0.030   4.134612, 10.431612, -0.797072